ROTFL!! Oh yeah, you can see some STRANGE looking folks at an Anime convention. They're nice folks, though. We stayed at the Sheraton in Boston last year, and the hotel folks said that the AnimeBoston attendes were very well behaved.
Our daughter has been going for years; we just get a room for the weekend. Last year she created two Anime music videos to enter into the competition. Both her videos made the final 30 out of 89 entries, so she was thrilled!