When I first started hiring, I wanted 60-minute sessions and nothing but 60-minute sessions. Period. Then it started feeling like playdates were being rushed. And they were, because of my desire to book 60 minutes. That's when I became more flexible and started booking for 60 minutes and asking if we could have the option to extend if we were both up to it.* When more and more playdates were being extended I started softening my stance and booking two hours.
I find that booking a longer session takes off the pressure to squeeze as much into 60 minutes as we can. It also gives us time for foreplay and relaxation time afterwards. There have been times where I wanted to leave as soon as I finished and, in those cases, that's what I did. If I pay for two hours and leave in 90 minutes, that's on me. On two occasions, I started to leave, unaware of the time, and the escort reminded me that we still had time left in our session. (We're talking 30 + minutes) One offered a brief massage (which I loved) and the other offered to extend our next playdate at no additional charge, which is what we did.
*Obviously, if a guy's minimum is two hours, then I book for two hours or don't book at all.