I've only been here once, but it was a very nice experience. I stopped in before the Atmosphere show the other day, and had a few cocktails before hitting the concert.
I had the Cheeseburger and French Fries, which was either phenomenal or I was starving; either way it was good. A friend of mine had the bruschetta (oh God, I hope I spelled that right), and my mouth was literally salivating as I watched it come out of the kitchen.
There weren't many people there, but the ambiance was nice, and our very large (somewhat intoxicated) group was treated with lots of patience.
The bartender was real cool. I was worried about taking my purse into the venue (Mesa Amphitheater), so he actually volunteered to hold it behind the bar for me until I returned at the end of the show.