On many cruise ships, you are assigned a dinning room that you eat in the duration of the trip. Disney rotates you through the four restaurants. You keep the same wait staff and table number as you go to the different dinning areas.
They are great. Most noteable are Tritons and Animators Palate. The later starts off as black and white drawings, but as the meal progresses, color and life enter the atmosphere and make the experience unforgetable.