I'd sent Butch home a few days ago to invite new campers in, and he finally just visited the island where I was completing his requests. When I was done I did the final chat thing with him and he told me he remembers when he stayed at my camp and hoped I'd invite him back. I've run into other campers that I sent home, but Butch was the first to say anything about being at my camp. I thought that was really neat, as I'd hoped there would be some sort of "familiarity" in this app like there is in the console games.