Magic Kingdom-
Liberty Tree Tavern
Crystal Palace
Monorail to Polynesian for Ohana or Kona Cafe
Ferry boat to Wilderness Lodge for Whispering Canyon.
Epcot-
Germany's Biergarten
Canada's Le Celier
Norway's Akershus (Princess Dining)
Pretty much every country sans China and US will give you a enjoyable dinner.
Disney Studios-
Eh... park hop back to Epcot or a resort? 50's Prime Time and Mama Melrose's are serviceable. Brown Derby is good but not worth the $$.
Animal Kingdom-
Within the park: Yak and Yeti isn't open yet. Tusker House used to be good and will be reopened by then. Rainforest Cafe is just as good as it is in your local mall. My best advice is to go to Animal Kingdom Lodge and try Boma since AK is closed by dinner time anyway.