Breakfast and Lunch are like regular character meals, you have princesses walking around, visiting the tables, signing autographs, posing for pictures, etc. Dinner doesn't have the same interaction.
still downstairs for diner for pictures. The Fairy Godmother and Suzy and Perla perform a little show during the meal. I have heard of times where the mice stop to sign autographs but I don't think it is planned.
For the OP, we have done lunch twice, have liked it and will be going again next summer. The lunch preference is driven more by dining habits for us. Also, this time our daughter will be doing BBB before eating at CRT.