I read this hint here on how to get picked here on this board before we sailed and it worked for us:
They pick the contestants by randomly picking a row, and then randomly picking a seat number. If no one is in that seat, then they go down the row to the right, till they hit the first occupied seat. If noone is in the row all the way to the right, then they go back to the left till they hit an occupied seat.
Sooo, to get the best chance of being picked, wait to sit down until right before the show starts and pick seats in a row with very few people.
My husband doesn't like being the center of attention, so I didn't tell him anything about this. I just dilly dallied in the store until right before show time, and walked in and picked a row in the back, there were only a few people at the very far end of the row to the left, and no one to the right at all. We sat down.
The second contestant was being picked and the row came up toward the very end of the alphabet, Y or something. Here came the CM and ran right up to our row. Then they number came up, and no one was in it, so it went down to my HUSBAND! He was not thrilled, but with all those people staring at him, what could he do! He went up there with my then 9 year old step-son. They won the $80 shipboard credit! It was alot of fun! Too bad I forgot my camera that night!