aubriee I am not a potato eater, so often have them substitute extra green veggies or a side from another entree. If you want to substitute a side that's listed with another entree they'll let you do that (unless it's one of the chef's selections that some of the restaurants offer. With them you must choose one of the appetizers, entrees, and desserts that's listed and they allow absolutely no substitution for any reason). Some restaurants have separate sides that are listed at the bottom of the menus. The only two restaurants I've ever been able to substitute for one of those are Yachtsman and Artist Point.
Thank you for the suguestion. That is what I was looking for, the ability to trade potato's for brocoli. It's better than just passing on the desert alltogether.