Well if you are looking for a character meal then you might try Chef Mickey's (in the Contemporary) or the Crystal Palace (in Magic Kingdom).
O'hana's at the Polynesian is great food and great fun if you like a lot of meat on skewers!
Yachtsman Steakhouse at The Yacht Club is very nice, and you can walk around the area afterwards- it is quite lovely at night.
The California Grille on top of the Contemporary has a great view of Cinderella's castle, and you can make reservations near the time that they have the fireworks at the Magic Kingdom.
Narcoosee's at the Grand Floridian has good seafood, and it is also a nice area to walk around afterwards.
Hope this helps!