Bloody hell, I'm surprised you got a punt - well done.
The whole cum once in 30 mins is pretty common from my experiences. These days I always check on any limits to the number of squirts before making a definite booking. They tend to be pretty adept at getting it all over and done with quickly too.
Saw a Hungarian girl last year who limited to once in a 30 min session and I topped up to an hour for unlimited after she stroked the first load out. Came twice more in the hour, although she had to work for last load which didn't please her.
If you are open to the idea of topping up to the hour make sure it is the hourly rate though, not 2 x 30 mins.
