Good questions. I'll add the answers to the stickied post about the clubs as they come in.

1) Unless it's a themed country night, you won't hear country music.

1a) Yes. It's rare but it happens and you should be able to read the room easily. I'd say just pay attention to some of the women in the cage, they can get perturbed if you take the spot light away from them. Ha. ^{Seriously though...}

2) You will want to ask them about sex toys, send them an email and they are quick to reply. Let us know when you get the answer, please.

2a) Change of clothes (assuming not lingerie) is okay but they really discourage 'dressing down to street clothes' - ARRIVE sexy, stay sexy. There is a coat check if you don't want to be too sexy for the streets. For lingerie, I think that would be totally fine. My wife and other women take socks for when 3hrs of high heels isn't cutting it. Definitely take your own condoms as theirs are fine but getting the right fit is better. They tend to have a good selection of major brands, though. Bring a combo lock for the lockers to store stuff in.

3) I don't have the latest on this.

4) Yes, see 2a above.

Good luck!