I had a late November baby too, Jamie. The years during which her birthday falls on Thanksgiving are so fun! As for your very special celebration, I think Cinderella's Royal Table is a wonderful choice. In fact, my oldest daughter celebrated her seventh birthday there years ago. There sure seem to be a number of similarities between us, don't there?
While it is a lovely experience, I wouldn't suggest dining at Cinderella's Royal Table for both lunch and dinner. Either of the two would offer your daughter a most magical experience, but both might be a bit excessive. I don't really have a preference for one meal over the other. If you'd like, you can
customize your Disney celebration by ordering a cake to be delivered at the restaurant. Prices are always subject to change, but currently the per person cost ranges from $36 to $60. To find out exactly what the cost will be for the meal you choose, ask the agent who takes your call at 407-WDW-DINE. Good luck and happy birthday to your princess!