First off, always remember that everything is YMMV (Your Mileage May Vary) -- nothing is a total guarantee, and if you really don't click with a lady, you may have a dreadful experience and she may fall all over herself hustling you out of the room.
That said, however, most ladies are willing enough to go for at least a second round with a client who books an appointment of at least an hour. If things have gone at a leisurely pace during the get-acquainted period and the first round, you may not have time for it -- she may not have the time or inclination to hang out and go a little over time, and you should never expect her to do it, anyway. If you're looking at the clock and thinking, "I've still got nine minutes left in my hour, maybe we could squeeze in a quickie", just give that shit up right now. It's one thing to say, "You know, I'm having a great time, can we go for an extra half-hour/hour/evening, here's the additional donation", but don't expect her to comp you some time without a strong reason. If she's got the time, she'll probably agree, but if she's got someplace she has to be, you're out of luck.
Usually, as you're getting ready to get down to the physical stuff, she'll ask you something along the lines of "So what do you like?" This is your opportunity to say, "My dick gets hard when the wind blows, I can pop eight times in an hour, and I love slapping your ass while screaming 'Ride 'em, cowgirl!!!'". She'll probably laugh, but that will give her a better idea of what you're expecting. If all you say is, "Um, I like it all, whatever you want is fine", then don't get pissed when she can't read your mind to know the particulars of what makes a session wonderful for you.
Be respectful, avoid crude suggestions, and remember that she doesn't know you yet; you could be a psychotic freak for all she knows. Some ladies will indeed do just about anything you'd ever think of, but it's not too often that you'll find a genuine ad that is very explicit. Check her reviews to see if there's something mentioned as a particular favorite of hers, or if there's something she's not willing to do. Don't just rely on the profile details, as those can be outdated or just plain wrong. Once she has gotten a chance to be around you and see that you're clean and respectful, you might be surprised at the interesting things she's willing to try with you.
