At the entrance of club they ask you about your motivation, why do you want to enter to the party? Fucking is not a good answer. Music neither. You must have your very good reason to joing the others and also follow the strict dress code: lingeries, fetish clother or naked are allowed, street clothing doesn't.
https://www.derstandard.at/story/2000114...ts-muessen
Common sex parties are very popular in the US. There are many kind of them, swinger clubs, sex discos and more. Interesting that I have not heard about Sex positive party in Wien, at first glance, it sounds exciting.
There are many swing clubs in Vienna - Google shows almost a dozen of them. Frivoli, Le Swing, and Traumland are considered the coolest. I did not have time at my visit, so we chose only one of them, Frivoli, by scientific method. Unfortunately, the visit turned out to be a total fiasco. Firstly, we managed to get there only on Sunday. Still, on Sunday evening, there is no life in European swing clubs . At the moment of our appearance, according to the citizen performing the concierge function, there was one couple and three single gentlemen.