Plaza Inn for the character breakfast. It's awesome. The breakfast buffet is pretty good and I've never seen such a wide variety of characters.
Get over to the Tiki Juice Bar for a Dole Whip.
Blue Bayou does an amazing adult dinner. And the ambiance.
Ariel's Grotto breakfast is pretty great for all of the princesses and it's actually a nice meal too.
And if you're cool with a bit of heartburn, find a chimichanga stand.