the name of the bar is Checkers? It's in midtown west and there are only older couples who swing. I had THE best time there at Halloween one year. The club is big and has lots of rooms and a nice dance floor. Really fun!

The clubs I've been to have different people hosting theme parties on different nights and thus draw different crowds.

I like Pendulum when Juliette hosts.  That's their Leather & Lace party.  Combination swinger/fetish.

I went to Decadence for their Thursday night group play party and it had a great mixed crowd.

Some of these clubs gave MILF nights, so if you are looking for an older crowd, I'd suggest starting there.