Last year we went to one breakfast and two lunches. I know when we were waiting for lunch, people came out and told us certain princesses were or weren't there. One time they said Alice was there for breakfast but not Sleeping Beauty, and then when we went for lunch, Alice was gone and Sleeping Beauty was there. Another time at lunch, someone told DD4, who had her Jasmine costume on, that Jasmine wasn't there for breakfast, but she was for lunch.
So I figure they change shifts between breakfast and lunch. In Dec. we got there just when lunch was beginning and it was a while before the princesses came out, but we had Cinderella, Jasmine, Ariel, and Snow White with Aurora as the greeter. Other times we've seen Mulan, Pocahontas, Mary Poppins. We're going again in Sept. They have great food!