Old Town has a lot of the nightlife that you're looking for. There's a few clubs out there where drinking and dancing are the moods of the night. But it's not restricted to just there. Out east across the street from the Raytheon/Beechcraft airfield is a recently new addition called Graham's Central Station. It's a large building that encompasses several themes of music to accomodate your tastes. They have anything from techno, popular, R&B, country, oldies and whatnot. If you're into clubbing, Wichita is one more place to add to your list of places to go.
There's a club for everyone. I like going to Graham's cuz you get a little bit of everything.
Dress Code: Some places don't care what you wear but a lot of them at least needs the guys to tuck in their shirts.