Last year with our 5 year olds (2 girls and a boy) we did Princess Norway breakfast, CRT, Chef Mickey's, Crystal Palace, and Hollywood and Vine.
Princess Norway breakfast -- loved the food! Plenty of it, adults very happy with that. Great interaction with princeses, got a photo package with Belle included with our meal, princesses did not seem rushed, saw 4 princesses in addition to seeing Belle as we entered.
Cinderella's Royal Table (breakfast) -- great to see/interact with Cinderella downstairs and get autographs/pictures, castle setting was really neat, food was good, somewhat more rushed than the norway breakfast in that they move groups through a bit quicker. Magical ceremony with swords and magic wands for the kids was really cute. Saw pretty much same princesses as in Norway, probably won't do again next trip because it was 2 TS credits and would have been more expensive than Norway if we paid out of pocket, but may do again in 2 years.
Chef Mickey's (breakfast) -- great interaction with the classic Disney characters (Mickey, Pluto, Goofy, Donald, Minnie), food was awesome! Loud, bright environment, ate here for DH's birthday.
Crystal Palace (supper) -- Winnie the Pooh, Tigger, Eeyore, Piglet, loved the character interaction, plenty of time with them, food was good and wide selection, good place to take a break after a day in the MK! Kids got to parade around the restaurant with the characters.
Hollywood & Vine (lunch) -- Leo and June (Little Einsteins), JoJo and Goliath (JoJo's circus). Food was OK, decent selection but not my favorite of the ones we did. Kids liked seeing the LE characters but was only 2 of the 4 characters. Loud and kids get to dance around.
My nurse did 1900 PF and Donald's Safari Breakfast which she also liked.
I would recommend calling as soon as you can to check availability!