After going for a couple of times to WDW, we are finally having dinner at CRT. My 2 DD's have no idea the princesses are there dor breakfast and lunch. One of them will be 13 during our trip so it's safe to say she is a little past that, although she does love them and all the other characters. My other DD 9, has a long lasting love affair with Chip n dale and they are pretty easy to find.
Dining in the castle is something everyone would like to do princess or not. I prefer meeting the prince (if I am lucky enough) at 1900 PF. I have already met many princesses on our previous trip and do not feel the need to ABSOLUTELY dine with them in the castle. The DD's either. Maybe when they were 4 or 5, then I would have set that clock like many Disers and tried my best to get that booking. Unfortunately my girls are growing up too fast.
Enjoy your little princesses!