Say for instance, during the screening, it just doesn't click that you know that person. I would guess, unless there are really good pictures of the lady, this would fall on the responsibility of the lady to know if they know the guy or not.
If you did know them, how did the session go, if there was one?
I went to a strip club a couple of times and ran into people I knew. One girl I somewhat knew and used to work with gave me a dance or two. It was a little weird, but fun once I got into it. She was a new dancer, so that put a damper on it.
The other was a girl I went to elementary school all the way through high school with. She didn't dance, and didn't take off her top, so nothing happened.