I used my tripod and remote release.
I positioned the camera where I wanted it and I cranked up the camera so that it was over the heads of the audience in front of me. I sat towards the back rows and I had the camera set up so that the people that were seated
after me in the rear rows could see what I intended on doing. No one complained.
Knowing how the show went I periodically cranked the camera back down to adjust the zoom and direction for the next shot that I wanted to get.
I fired away with the remote release so there was no reason for me to stand up.
I have to say that this worked beautifully. My only problem was that Mickey was over exposed due to the spot light and that had nothing to do with positioning.
By using the tripod and remote release my camera was instantly ready at the push of a button. It gets tedious holding the camera in position for such a long show.
I hope that helps,

Marlton Mom