We spent our 10th anniversary at Victoria & Albert's. If you can swing it, it really is a special place. You can put your daughter in the Neverland Club for the time you and your husband are there. When we went, I was presented with a rose, and we had our own personalized menu.
Another thought is maybe one of those cruises that give you a special view of MK or Epcot fireworks.
Behind the scenes tours....hot air balloon ride....dinner at Cinderella's Royal Table. There are plenty of things you can do to celebrate!
Sharon