Great show. Small piece of advice: people start lining up well before :30 before the doors open- the line to get in is ridiculously long. Once the doors open, it moves pretty fast. Don't worry when you get there at the time that doors are supposed to open, and you see a seemingly neverending line which goes into the casino. The line moves in pretty fast.
1. Don't buy popcorn unless you are prepared to have it completely dumped on top of you.
2. Don't pick up any large balls which float your way if you're in the front rows at all. Unless you want to be a part of the show.