I've been in a few of the Las Vegas clubs and would have loved them a lot more if I were some 25 years younger.
The music in most of Las Vegas' clubs is really loud sometimes that you can't hear the person beside you when they're talking, and many times you can't hear yourself talking above the noise.
Clubs that have a nice dance floor and loud music are not a place to go if you want to chat with someone, but are a great place to go if you want to let loose and have a blast!