Im a 30yr old guy traveling with friends and need some help regarding panama city, panama. nightlife scene.?

What I need to know is basic info on night clubs in panama city panama (not florida), and NO i am not taking about clubs or bars infested with hookers!!! Just out to dance and meet cool people, locals or travelers. Like what is the typical dress code for a nice club? dress shoes, sneakers or flip flops? dress pants, jeans or board shorts? Can I get in to a nice club with a tee, board shorts and flip flops? or should I just pack a little of both? I will be there for 5 nights, should i leave the city? or should i just stay and party there every night at a different club? Also what is the average I should plan on spending nightly on such things as beers, club door fee and food? I know I asked a lot question, but this web site has helped out a lot in the past with my other travels. I've been to mexico, costa rica, argentina and brazil before and this has helped out a lot and has made my traveling experience a great time. So any help i can get, would be greatly appreciated and thanks in advanced!!!!