In MK: Cinderalla's Castle for Princesses: Cindy and usually: Ariel, Aurora, Belle, Snow White, and maybe a fairy godmother.
In Epcot, Akershus Royal Banquet Hall - Ariel, Aurora (Sleeping Beauty), Belle, Jasmine, and Snow White... maybe Mary Poppins
Chef Mickey's is great for all-around characters... but no princesses.
1900 Park Fare (Grand Floridian) - when open - has Breadkfast with Mary Poppins, Afternoon Tea with Alice and Mad Hatter, and Dinner with Cindy.