First off, to address the people bitching about paying to park in The Marquee's lot . . . just don't park there. There are plenty of places to park for free within reasonable walking distance.
I've always liked the venue itself, with it's sloped floor, decent sound, great location. The show I saw recently I didn't have to take my shoes off, but at some shows I have had to, and I don't mind.
My personal biggest beef with the Marqee are the beer prices. $6 for a bottle of Bud Light? They really aught to be ashamed. Not as ashamed as US Airways Center and their $10 beers, but they should still be pretty freaking ashamed