EastCoastNAZ saidEach one has its own personality so, as Clayinthebox said, there's only one way to find out.
Very true. Like any club they attract a certain kind of man depending on the music, drinks prices, etc etc.
Guys actually dance a hell of a lot more. Most of the mainstream ones cater to men who like dance and pop music. I have been to more niche gay nights so you can find ones that play alternative music etc.
Men generally keep their clothes on so don't go in expecting every guy to be in a pair of hotpants/shirtless. You do find that a lot of women love to go to gay clubs ( not just lesbians) and of course you also get drag queens visiting so it's not wall to wall guys.
Mostly they are a fun night out and you can meet some very interesting people. Naturally you do get the uber gays who look you up and down but that's to be expected. It wouldn't be a gay club if there were no bitch factor