We have had lunch and dinner at CRT for DD birthday. She was thrilled to be in the castle, but they did not really make a big deal over her at all.
Honestly, I think so many people are having birthdays in WDW, the restaurants are happy to give you the cupcake, etc.. but they really do not over celebrate with you. We also are going for DD's 8th this January and she chose Le Cellier.