Sex with an escort is legal in escort services as long as there is no verbal solicitation and not specific sex session. There is a male escort agency that operates in Las Vegas, Nevada that serves straight women. The men came onto many talk shows and admitted having sex with women during escort service. They claim they are not contracted for sex for pay nor guarantee sex as part of the escort services. They claim that whatever between them and the client is personal preferences between consenting adult. The agency owner said that he doesn’t sell sex. He only sells companionship. He has a multi-state operation and never got busted for inter-state pimping. The agency must have lawyers wrote the disclaimer and their legal claims.  So it must be legal under the legal system.  
  The women hobbyist don’t arrange for a sex specific session but a date with these men. Men hobbyists tend to arrange for specific sex session.  
The specific sex session make the prostitution charges sticks.  It doesn’t require verbal solicitation. If a hobbyist laid down the money and the escort move to commit sex act within the hour, it is a crime of prostitution.  
                 If a male hobbyist goes out on a public date with the escort, they move to a hotel room after several hours public date to watch a movie, sex happens with no solicitation in the hotel room, it is personal preferences between consenting adult.  The intent of the male hobbyist was the purchase of true escort services.  
                Meet and Greet doesn't work because the intent is to sell a specific sex session. If the escort sells a dating experience, the intent is escort service and not prostitution.  
                If a male hobbyist makes a commitment to come to a hotel room for a specific sex session with an escort, then the prostitution charge will stick. The intent was to pay for a specific sex session.  
The courts said that as long as the person is paid for services other than specific sex session then it is not prostitution.  The court in Marvin vs. Marvin 18 Cal.3d 660 (1976) that two non-marital persons have the right to contract with each other as long as the relationship is not specific sexual services

You are stating that in the absence of any specific discussion about sex for money, that the arrangement doesn't really exist.  You are also saying that if sex doesn't happen within the first hour, that the arrangement doesn't exist.  Both statements are false.  

I cannot understand how on the website of the male escort agency implying that sex with one of the male escort is legal. The male escort went onto TV shows and confess sex do happen.  
       Well if you study the stings you can see the pattern. The prostitution laws are enforced for specific sex session.  Not for going onto dates with an escort.  
         Sugar Babies and mistresses are legal. The legal system is different than the law system.  
 

United States law states anything of monetary value.
Sugar Baby/Sugar Daddy arrangements are not legal.
Please familiarize yourself with the law prior to posting untrue statements.
Folks may get in trouble from your comments and that's not cool.
Thanks

Prime example form a Phx PD report, undercover in bed with a Tantra gal.  He tries every trick in the vice cop book to get her to say something wrong "for the money do I at least get a hj" like etc.  She refuses to take the bait and no prostitution bust since no explicit offer of sex for money.

There is no necessary consistency on how much clarity is needed for solicitation. It will come down to whether LE feels like busting you, the prosecutor feels like charging you, and the judge/jury believe your defense is enough to constitute reasonable doubt.  

There has been court ruling on this issue. Mistresses- lovers are exempt from the prostitution laws because they are classified as non-commercial relationship.

My multiple hour dating approach to escort service will work with hiring a dream team of  lawyers.  
 If a dream team of lawyers explains that to the judge, the judge may throw the case out if you get charged. The judge can declare sex with a client  on a real date is legal based on the circumstances.

Where the OP got it  wrong is his notion of a “specific sex session” and the idea that  
“as long as the person is paid for services other than specific sex session then it is not prostitution.”

this is a total crock of shit. Altho, if you are looking to get a good laugh in court, cite he Marvin decision in your California Penal Code sec. 647(b) proceedings, the judge and prosecutor will get quite the kick out of it.

You will not find it in the state law. You can find legalized non-commercial prostitution in case law. The woman who traded tickets for sex was let go.
What the judges says is higher the state laws.  The legal system is higher than the state laws.  You will not find specific sex session mentioned in state law. You will find it in case law.  
The defendant in Marvin v. Marvin tried to use prostitution defense to get out of the oral contract. The courts reject it because the relationship was not sex service only. You will not find this in the California Penal code.  Also you will find the mention of specific sex session in USA vs. Lynnette HARRIS and Leigh Ann Conley.
Many states don't have a marital exemption to prostitution laws. In legal theory, you can be charged with prostitution for marriage. There is an implied agreement for financial support for sex. If a spouse doesn't give sex, it is grounds for divorce which can mean the end of financial support. That doesn’t happen because of the legal system.  
The only state that I know of that has police officer exemption from the prostitution laws in sting operations is Michigan.  Many states don't have exemption for police to solicit sex for pay. The legal system allows for it. The law system doesn't allow for it.  
You have to look at how police enforces the law. Are they going to a public date with a hobbyist?  I don't see they enforce the laws for hobbyist dating escort. What I see is the cops bust escorts and hobbyist for specific sex session.  
Do you see cops busting mistresses and sugar babies? I don't see if. Yes, it is a crime according to the law system but allot of things are a crime that you don't see. There must be something in the law book make everyone a criminal.  
I like what Dave have to say.  He is reporting on the facts.  
You are lowering the chances of getting busted for going on a date with the escort.  
Not telling anyone to change their practices. Not telling anyone they have to date an escort.  If you want to practice showing up at the hotel or motel room for the appointment, it is your choice.

There are tons of reasons to deal with the mid- to high-range escorts that are the majority of the women reviewed on this site. By frequenting escorts who are discreet and screen well, and don't make explicit offers of sex on their sites (gfe, pse, other acronyms), you reduce the likelihood that you will have legal trouble. This isn't because the arrangement is any different (though I contend that it IS in fact an arrangement for time/companionship rather than sex, but that doesn't go far in court), but because the police generally don't have the incentive to go after these women. They must couch their stings under the guise of seeking out human trafficking, ie. underage girls and horribly abusive pimping rings, so they can have public support of their efforts. There's not much support for going after ladies and gentlemen who aren't bothering anyone.

I agree your plan will work but not needed at least in Phx to avoid arrest.

I've read the DD indictment, the police report as well as in the latest Temple case. And know from lots of gals what was discussed in the "free talks."

Adding to your fine good legal points.

The judges are not higher than state law. In fact, just the opposite is true, the judge has to apply a clear criminal statute. He can interpret it but if it is clear on its face he has to apply it. The only exception is if it is unconstitutional.

With escorts, any sex act between them and the client is considered commercial sex.  The court conclude that it is commercial sex is because there is trafficking involve. The high number of client is coming to and from the appointments and the high turn around rates makes it commercial.  
Mistresses (sugar babies) don’t have a high turn around rate and there is not enough foot traffic from clients  that why they are classified as non-commercial.  
The courts already rule that is no reasonable expectation of privacy in commercial practices even it is done in private.  You can get evidence thrown out in a mistress-lovers relationship but you cannot get the evidence thrown out with an escort-client business.  
The courts view escort as a profession and engaging in business.  Sugar babies are viewed as armatures and non-business but have a relationship with a sugar daddy.
The courts said the legislative intent is to outlaw the business and the profession of prostitution not to outlaw non-business  and non-professional lovers’ relationship.  
There is a federal rule that cash and property given by a lover is a gift. This applies to the states through the 14th Amendment.   If it is a gift, you cannot hire someone, or make an agreement for sex for pay because gifts are not a consideration.  So gifts for sex are legal. Consideration for sex is NOT.  
That won’t work for an escort because they are NOT classified as lovers. Lovers are classified as non-commercial.  
The only way you can get out of it is get the judge to agree that you are paying for time and companionship and the commercial sex is free.  
If you have a public date with an escort for a few hours, go to the hotel room to watch a movie, no solicitation, and no expectation of sex, then the judge may conclude that you are paying for time and companionship and the commercial sex is FREE on the condition no code words suggesting sex for pay like GFE, BBBJ, etc. on the ad.  Dave is right about the ads can get you into trouble.  
If you show up for specific sex session, there are little chances of get out of it. You cannot use donation, time for companionship, etc. to get out.  
 If you get your case in front of a jury and you are found guilty, the judge may reverse the verdict by concluding that you engaged in FREE commercial sex.  
The courts view specific session as attempt to engage in commercial sex because it allows opportunity to serve too many clients. Dating doesn’t seem to give opportunity to create a situation where there is high number of clients
You are taking a chance. There is no guarantee.  
It is not a crime to engage in commercial sex. It is a crime to pay for commercial sex.  
It is not a crime to give a gift or pay for non-commercial sex.  
(See UNITED STATES of America, v. Lynnette HARRIS and Leigh Ann Conley; Fred Cherry v. Koch; COMMONWEALTH PENNSYLVANIA v. STEPHANIE ANN DANKO

1) Penn Danko case - This old 1980 case is based on the PA law that has the "business" requirement as part of the prostitution definition.  Arizona does nor most other states - PA may have also changed wording in the last 30+ years since the case.  

Case law.  Carroll v. Lee, 712 P.2d 923 (Ariz. 1986).