FRESH is excellent for breakfast or lunch or brunch on the weekends (it's located in the Dolphin). The main part of your meal is "made to order" even though it's a buffet, hence the name "FRESH".
Even though we've still not been to BLUE ZOO, I've only heard great things about it.
Tubbi's, Shula's and the Dolphin Fountain are also located in the Dolphin. Tubbi's is open 24 hrs, very convenient and has the refillable mugs.
The Swan's PALIO is very good Italian type fare, Gulliver's has a character dinner every night with a buffet OR order from their menu. As BCVBRUCE mentioned it's also the Garden Grove Cafe at breakfast but only has characters on Saturday and Sunday mornings.
Lots of great options between both OR you can also walk or boat over to some of the other resort restaurants at the YC (Yachtsman Steakhouse & Yacht Club Galley), BC (Cape May Cafe & Beaches and Cream), BW (Spoodles, Flying Fish and other restaurants on the boardwalk including ESPN club and Big River Brewing Works (something like that))....SO LOTS OF CHOICES are a walk away
EPCOT & MGM are also just a quick boat ride away. EPCOT's World Showcase is right through the Int'l Gateway where you'll enter EPCOT and there are many restaurants to choose from all around the world!!