Thought I'd posted this before, but here goes:
Captain's Grille at the Yacht club
Boma at Animal Kingdom Lodge
Play 'n Dine character meal at DHS
Trails End Buffet at the Campground, will be the least "impressive", most basic
In general try to book a meal during the bfast time slot. I've got to think that somewhere between 7-11:30am you can find a seat for bfast...unless you're a group of say 7 or something like that.