Sit in Cat 2 when you go. It is side seating FYI but there are some benefits.
1) When the acrobatics are in the center, you can lounge back, the seats recline a little bit and see the formation of a star. It's incredible.
2) Easy to get in and out
3) There aren't as many seats in this Cat and none of them are bad.
Tips:
There is a clown who looks like an usher. Looks like a bad englishmen, if you want to walk all over the place and have people laugh at you, talk to him. :)
Don't get there too early. Mystere is in the back of T.I where KahunaVille is. It gets uber crowded quick. (I hate lines)
For those who drink, go for it. It makes it all so much more magical. :)
If you've never seen a Cirque Show, this should be you're first.
Also there are many ways to get a discount to this show!