That's a good question because there is a lot involved. The unique "thrust" stage at the Beaumont juts right out into the seats, and about at the same level. If you are in the first or second rows to either side of the orchestra pit then you are practically on the stage. Kelli and Ruthie Ann deliver songs from just a few feet away from you and you need no opera glasses to read the expressions on the cast's faces.
The down side of this is that you can get caught up gaping at the nearby actors, and miss the full force of the production. If you are only going to see it once, unless like me you get starstruck being so close to the actors, perhaps you are better off sitting in the middle to rear orchestra. There are only thirteen orchestra rows, so no one in the orchestra if far from the actors.
So that's the question of sitting near or far. The side orchestra seats, especially in the last five or so rows, are the most shunned seats. If you sit in the half of the row closest to the wall, you might miss anything happening in the rear corner of the stage on your side. But not much goes on there. Almost everything is staged in the thrust area. You are also farthest from the actors. If you want to play it on the safe side, don't sit in the last five orchestra side sections and just sit in the side sections if your seats are closer to the aisle than to the wall.