As long as you do not have your heart set to meet the characters or get autographs that perform at the dinner, you and your daughter will probably love this experience.
My first visit to Cinderella's Royal Table was last month, and I am not ashamed to say that I cried happy tears twice during dinner. The Fairy Godmother, Suzy and Perla did a short performance, and without giving it all away, it was a magical experience that felt very special.
The Fairy Godmother, Suzy and Perla did stop by our tables (very briefly) for pictures with us after the performance. Others on DIS have reported that they did not stop by, so please don't set up expectations that they will definitely do this. There is no way to know.
The food was delicious. The pretzel bread was amazing, and the salads were interesting; we had one of each salad from the menu, and we enjoyed them. The entrees were very good, although I might suggest that some should avoid the pasta since it looked a little watery at the bottom?
The dinner in the castle, with the sun setting on Fantasyland in the background, through the stained glass windows, is just beautiful. I loved having dinner here, and we felt like VIP. In my opinion, this is a tiny restaurant, and unless you are facing a wall or corner, just about every table is a good table! After we settled the bill, it was perfect timing to catch "Spectromagic" from the castle's balcony, right behind the Dream Along with Mickey stage... Only CRT guests are allowed to stand at the castle, so that was also a special memory for us.
It's a must-do at least once.