To be honest, we were a little disappointed. DW and I had the salmon, the portions were rather small and a little dry, and DD had the pasta (or rubber bands as she called it). The dessert, advertised as a royal dessert baked freshly in the royal bakeries was a muffin with a small dollop of ice-cream.
The interaction with the princesses was done very quickly. Remember, the photo with Cinderella is done in the downstairs of the castle. Cinderella doesn't visit you at the meal.
It is something that has to be done, but I wouldn't do it again.