From what I remember the Marquee was gorgeous. Great music, swings (or were the chairs seemingly swinging the night I was there?), and free drinks... in hindsight, I'm a woman so free drinks may not be universal.
The night was even better because I had an awesome wingwoman who thoroughly prevented creepsters from hollerin. (Where was she when I was in Vegas in November 2010?) I think it helps that I'm from the Bay and that I know how to move to the bass line as opposed to the people who swing their hips and hair wildly in the hopes that they look hot (they do, but dancing is a different story).
Back to The Marquee - honestly, I got in for free, didn't have to wait in line, and all I can distinctly remember is debating with every person that approached me on the dance floor. But that's like any other club experience I've had in Vegas.
In conclusion, I had fun and was completely enamored by the ambiance.