Our DD's are 2 & 5. We alsways do the Princess Storybook Breakfast in Norway each trip. They have Jasmine, Aurora, Belle, Mulan, and Snow White. The food is served family style. When you first get there, you get muffins, danisg, etc. Then it's typical breakfast french toast, eggs and bacon. We have always had a great time.
We did do the Cinderella Castle breakfast once. The food was just okay. It is preplated so you get everything they serve on your own plate. For all of the work to get the PS, it wasn't anything to write home about. Plus, in the last few years, Cinderella has become easier to find in MK. So we eat dinner in the castle each trip so the girls still get the thrill of it, but thay can order what they want of the menu.