When I was a kid my family was on a family vacation and we had a planned stop for the night in Reno at the Hilton/Sheraton (I can’t remember exactly what it was).
We’re checking in and the person at the front desk hands my dad a letter, and it is a notice & waiver from the hotel stating that they’re hosting a swingers convention that weekend. Cue us to looking around at the casino floor and notice certain sections of the gaming tables and slots are walled off with floor-ceiling curtains and people walking around with “interesting” clothing.
Anyways, it was fine and probably just uncomfortable for my parents. The funniest part to me was the staff manning elevators making sure non-convention goers didn’t accidentally end up on certain floors. The image I conjured in my mind was all of the room doors open on those floors and hundreds of unattractive people fucking in the hallways, on the ice machine, etc.