Since it's refundable, I would book it and demand my money back if I don't sit next to someone famous. Well, maybe on a sliding scale:
I want half back if it's not even a B-lister, and three quarters if they are famous only in their field, like the glue king of Sacramento or a starting athlete in a sport I don't follow, like badminton. Hmm, and if they were nominated without winning a Golden Globe last week, I want 25% back.