Yes, there are no assigned seats in the theater and if you want to sit close you should arrive nearly an hour before show time. That really doesn't bother me, that is kind of what a lot of the shows here do in order to rush you in and get you out for the next show.
The person who plays Michael is very, very good. His voice and his moves do the King of Pop proud.
My biggest complaint with the show is that it is short of an hour. It could be at least 20 to 30 minutes longer. I had a deep discount on the tickets, but if I paid $50 a ticket, I would feel a little bit cheated for getting under an hour of entertainment. I would have loved to have heard songs like "Ben", "Scream," or even someone who could be a Janet impersonator.