We are eating at CRT for a birthday celebration and I just ordered the chocolate slipper dessert, so I don't have to lug cakes around. I did order 2 mini cakes for our dinner at WCC since we are staying at WL and figured any leftover cake could be taken to our room. I was told by CR bakery that the minicakes are pretty small and not to expect leftovers. CRT has a her royal highness package that you might look into. It includes a cake, balloon, and tiara I think. It's listed on the CRT dining page on Disneyworld.com.