I saw Mystere in 2004 and the show has changed a little, for the better. To be fair, we probably wouldn't have bought tickets for the show, but they were included in the package we purchased for Treasure Island. Our seats were in the back. But I'm glad we went.
The people in the show defy logic with their unbelievable sense of balance and acrobatic feats! I felt sorry for the people in the front row that were picked on as stage props (i.e., Baby's 'Mama') but it was so funny and I bet they had a blast!
If you haven't seen Mystere, it's a great show.