Split decision - We have dined at the castle, on Christmas Eve. Great for kids, and adults, but once is probably enough. LeCellier is great, though we haven't been there ON Christmas, but during that week. The decor is very nice, and the food is superior to Cindy's IMO. Candlelight has many fans on the boards, but that's something our family hasn't done yet.
So by 51% to 49% - I vote for Cinderella's Royal Table. It will create a memorable Christmas Eve, esp. for the kids, even though the food will be forgettable.