John Thompson

I'm sort of wondering...Is there any guys out there that have participated in a shoot by John Thompson/GGG? I'm located in Europe so it's kind of feasible. I've been thinking about it over the last few years and I think I'm ready to do it. I've always found the films by John Thompson very hot, and I've always considered it a fantasy, but now I'd kind of like to do it in reality.
I want to ask...what is the procedure prior the shoot? I know that the shoots are scheduled according to the website. But what's the routine? I guess you hand in your blood test to the receptionist, but what happens after that? Are you just herded in to the stage? During the shoot, who's allowed to fuck the girl? I don't speak German, so is that OK? I know that John Thompson does alot of stuff involving piss. Does that go on at the same time, or later?
I'm just a little shy about the whole procedure. But I really want to go for it. If any one who has participated in it, or if any girl stars in it, please shed light on the subject. Thanks!