We did dinner this past December, and basically there is an appetizer buffet bar with salads and cold cuts, and you order your entree as you would any other restaurant, and I believe the dessert comes on a dessert platter with 3-4 different desserts to chose from.
We didn't have the greatest experience here and needless to say I don't believe we will be returning. I do hope that for you it may be a great experience. The only positive thing that I can say is that the princesses are beautiful, and the ambiance is great, as if you were in a real castle.
Good luck on your dining experince!