You park and text that you arrived.  She texts you the room number.  You take the elevator up to the 8th floor, turn to the right and see a guy leaving the very last room on the right hand side.  You are discreet so you hide out near the vending machine until he takes the elevator.  You walk down the hallway and realize that the room number that she texted you is the same room number that the guy left from.  What would you do?  Turn around?  Go in anyways?  

No provider is going to text you the room number with a client still in the room. It's the whole purpose of the 'two call system" I can't honestly see this ever happening to me, so I really don't have an answer for you. Plus I don't "hide out" in hotel hallways. lol

there's no doubt you're getting sloppy seconds at that point!🤣
On a serious note....if youre passing each other in the hallway, I'd say that expecting a spring fresh experience would be out of the question....and daty would be the equivalent of licking the tread off a Good Year!

a provider or booker give me the go-ahead when she still had a guest in the room with her.  I don't think he thought this one through.  I would call it more of an impossibility than a hypothetical.  

...a massage only provider so it was no biggie (I assume she washed her hands, lol).  If the provider in your hypothetical offered massage/HJ appointments, maybe that's what the guy before you did.  

Hiding behind the vending machine? Like that wouldn't look suspicious? That sounds to me like a good way to attract all kinds of unwanted attention on yourself, not to mention the risk of getting the poor provider busted in the process.

I could very easily see this happening with agencies and even independents.  Appointment is over.  Guy goes to use the restroom before leaving.  Independent texts room number while guy is in the restroom or texts agency who in turn texts next client.  

I've had this happen a few times. Every time with an agency. Also, I've been that guy who was done, and walking to my parked car. Then seeing an obvious client walking-in after me.

Some hostesses, especially agency girls, often make a phone call to let someone know you have arrived. Some hostesses, mostly indies in my experience, sometimes travel with a friend: usually a GF but sometimes BF.
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I've been in situations where I arrived and another lady was IN the room. It's her friend, sometimes also a Provider, sometimes not. "My friend was just leaving (implying "but she knows you're here"). She'll be back later." Oh! How nice to meet you!  I have heard of Providers who traveled with a BF or husband as "bodyguard" and he stayed in the adjoining room, usually unseen and unknown.  
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(The Craigslist Killer in Boston was caught by the husband wondering why his wife didn't call to "check in" at the agreed upon time. The husband entered the room and interrupted the robbery in progress. The CL K fled the scene but was caught later.)  
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On the LOW end, there have even been stories on TER about GFs or BFs hiding in the cheap-o motel bathroom so the client couldn't even take a shower or drop a load.  
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It MIGHT have been a non-client friend leaving her room so she could TCB. Or maybe it was a client. You could ask her and insist on a co-ed shower to wash away the residue.

I have NEVER had this happen to me, nor have I heard of it happening to anybody else, or at least any provider that actually used the "two call" system. OTOH, I have heard of guys actually stacking up in the parking lot of some low end BP girls in the past, but that's a different matter altogether.

Agree.  It’s clearly her friend for security.  

to be room for HER in the shower, too.  Bwahahahahaha

She was late calling me to her room, then, as the clock struck the next hour (not the end of our 1-hr session, there was a knock on the door. Apparently she had either given her next client the number in advance or he was returning for a second session on her tour stop. Either way, she apologized profusely to me and even offered a discount on our next session.

I observed the previous client leave the motel room.  

Had this happen a few times with AMPs and CAs. As long as when I arrive there is a girl in the shower and another for me, not a problem. If I go in and there's only one girl (and I know the ladies working at these used a raincoat) as long as she/we shower before hand I can deal with it.

Based on the anecdotal info I don't know about this one Senior GaGa.  I think it would be too easy for a lady to check her phone after the guy finished and when he is in the bathroom freshening up and getting ready to leave.  Many ladies and agencies probably assume, for example, that by the time the agency reads the "I am safe and ready for the next client" text (which is sent by the lady while the guy is in the restroom), sends the client that arrived 15 minutes early and texted the agency "I am 15 minutes early, but I am ready whenever" (which was read by the agency and responded to with a "hey hun give me a few minutes k" before the current client had even finished) the "proceed to room 827" text, and the client walks from his car to the hotel, through the lobby, to the elevator, and to her room, the previous client will be long gone and the lady will have had a few minutes to clean/freshen up.  Problem is that sometimes the previous client may stay in the bathroom longer or be too chatty afterwards and the above sequence of events might happen quicker than anticipated or the next client might already be in the lobby.  

Ohh, and please read what is written above at least 5 times before responding.  It is a little tough to follow and I don't want to have to point out a problem of poor reading comprehension.  Last one you did a pretty good job whereas most probably didn't.

I disagree with both of your major premises, the first being that providers will send the "all clear" BEFORE the previous client has actually departed, and the second is that even if she did jump the gun and sent an "all clear" text that she would ever allow a "dawdling" client to remain for more than just a few seconds before escorting him to the door, whether or not he was ready to go.  

I had a version of that happen to me several years ago.  I had just finished when the provide, still riding my cock, looks at the clock then panics.  Hopping off she tells me I must go, she forgot she had book another client.  

On the girl, and what am I really after.  
Many, I mean many years ago when I had my training wheels on. I saw this girl from CL. As we were done and  I was relaxing, she got a call from her next client and that he was there. She told him to hold on, all this was going on in front of me. She got dressed, no shower, no fleshing up no nothing except to put a robe on. As I'm leaving we actually bump into each other as I walked out the door...I started to internally shame that guy but I thought what if it was me. Well she was kinda hot, but she was just someone who's hole I just wanted to plugged, she was just a release. No intimacy, no lost adventure... she was just there. So I guess if it was me, I'd have no problem. I'd go in and get my rocks off..just don't DATY.
Now I have a friend who when he's visits me, we'll tagged team some chicks in the San Gabriel Valley for kicks...so it's like the same thing..que no?
But if it was a intimate date,( 4-600) then I would hope that she's know better.....but I don't do incall so what's the point?