Per the link above, seating starts at 8 and the event ends at 9:30. If it’s not staffedwell enough, you may have an issue getting that many beverages in addition to your meal in such a short time.
I would just order 3 drinks at a time in order to make sure I got my money's worth. Maybe that's just me being a little too obsessed with squeezing every penny out of my dollars, though.