I have been to Good Time Charlies a couple of time as part of a college night out. Cheesy but who cares :) Many a DCU urban legend was born there, like "Return of the Rent Boys" ...long story ... more info in http://www.redbrick.dcu.ie/~wishkah/Encyclopedia/rentboys.html
Dress Code: You gotta be kidding :)
A small friendly club with a good atmosphere. My main memories of the club consist of the doorman wearing shiny suits and trilby hats, and my then girlfriends friend putting a condom over his head and blowing it up using his nose.
Dress Code: Smart casual.