But wouldn't this be awesome?
I can just see Goofy roaming those tiny halls with those shoes, tripping all over people.
Not that characters make "house calls" on the cruise ships, but I did see some characters walking along room corridors on Deck 2 of the Disney Magic in April. It was sometimes a chore to get out of their way. I rode an elevator with Stitch once on the Magic. It was only somewhat awkward.