I wrote this as a PM to a fellow hobbyist who asked for guidance navigating the strange waters of SA and I thought it might be of general interest so I'm posting it here.
What makes SA so exciting (and so dangerous and weird!) is the very fact that there is virtually no clearly defined protocol. Every arrangement is unique and you have to make it up as you go along. Also there is no way to screen the guys or the gals. That said, it can be very, very rewarding.
You will find a wide variety of expectations among the women there. I ignore those who say "I am not a prostitute" "No pay for play" or words to that effect. I also ignore those who say they want a platonic arrangement. I mean really, what are we there for??
Then there's a very wide variety of financial expectations. Even though I limit my searches to those who have checked either "expectations minimal" or "negotiable" I still have found some who are very happy to visit for multiple hours and receive a gift of $200 all the way up to one girl who refused to even meet me for coffee unless I gave her $500. Needless to say I passed on that one!
One thing I try to communicate as early in the message exchange as possible is that I am not willing to commit to an allowance. I prefer a gift-per-visit arrangement. If the woman does not agree to this I move on.
It's also best to get some idea of what she expect$ per visit. If you can do this before you "meet for coffee" that's great. But certainly by the time that first visit "to see if you have chemistry" is over, you should know if you two want to meet again BCD and if so, how much she expects. I made the mistake of neglecting that one time and, come date night, I discovered she wanted much more than I had thought! I wound up springing for a fancy bar tab, a hotel, and her gift and it was a costly evening. But way fun!!! (I do love fucking slim, pretty 21 year old blondes!)
Be prepared to invest some time and energy exchanging messages. Sometimes it can take months. I've been messaging one woman for 7 months and still never met her. OK she lives far away and I haven't had the chance to go visit, but still.
On the other hand, I received a message recently from a 21 yo who found my profile and thought I seemed nice. We exchanged several messages that day and by evening she had invited me to visit her "tomorrow". The next day we exchanged texts and she decided to fore-go meeting for coffee and said just get us a room. She met me there and really fucked my brains out!! Said she had not had sex in 3 weeks and was really, really in the mood for it. So we went from first contact to first fuck in one day's time. That's gotta be some kind of record, especially for SA.
Yesterday I had another exquisite session with my current SA ATF SB. We really seem to connect on sexual, intellectual, and emotional levels. It's amazing to us both that we are so compatible given the 45 year age difference! So I plan to keep seeing her as long as she will allow, probably to the near exclusion of any others. I guess this kind of long term affectionate mutually beneficial relationship is what SA is supposed to be really all about.