Downtown Vegas is a circus.
I really like The D (formerly Fitzgeralds). the staff from the hosts, waitresses, and dealers were all friendly. The new Long Bar is a sight to see. I could spent a night huddled up to a video poker machine watching a game.
It's still in a state of flux in terms of the name change, but I think that the new proposed changes I've read about, the place will be one of the nicer spots on Fremont.
Definitely worth a trip to see if you are Downtown.