The only problem with doing a cruise in China or Japan or somewhere like that is a couple of things they would have to change out all the signage on the ships and change the restaurants out as well, plus the typical Disney cruisers isn't likely to take a trip out to Japan just to take a
Disney cruise. Right now the reason they have all the ship on the east coat is they know they can make money there as people want to go to
Castaway Cay. Now if they did a longer cruise say maybe 10 days out of Port Canaveral and still had castaway cay people would go on it.