Another site that I'm on (aside from the other two swing sites already mentioned) is
Swing Lifestyle. There are clubs everywhere, you just need to know where to look, and you can just go and have sex with the one you came with. There are all sorts of rooms for every different desire, and people willing to accommodate said desires if so needed. The club in San Francisco that I went to and enjoyed is Power Exchange... their website may be able to help you find clubs in your area as well.