Didn't see them at 9:30. However, I did have the pleasure of seeing them play at a festival a few years back.
If you like vapid, watered-down, jam-band-type music played by a bunch of fratboys, check this out. If you like acoustic guitar-driven pop music that is somehow less intense than say, Dave Matthews, go. If you enjoy sugary sing-a-longs to some of the most generic, uninspiring lyrics ever created, go. Go, and you shall have your ass rocked off.