Mr.ToadWildRider: They don't turn people away for wearing costumes at the Not So Scary Halloween Parties at the Magic Kingdom. The night I went to that I saw far too many Snow Whites to keep count, and many other characters (including a *very* convincing Captain Jack Sparrow, and one that left a lot to the imagination

) In fact, they encourage people to dress up for that. The official website, indeed, says: "Characters decked out in their favorite costumes — so wear yours, too." (
This page)
And no, before you ask. I wasn't in costume. Mainly because I didn't have time to sort one out inbetween getting back to Vista Way from work and leaving for the Magic Kingdom (which amounted to less than 10 minutes as I recall.) The people I was there with were, though, and as we took the ferry from the Transportation and Ticket Centre to the Magic Kingdom, the captain on the ferry commented on the tannoy (he was doing the welcome announcement already as we were last people to get on the boat, arriving just as they were closing the gates) on the "scary looking Mickey Mouse" that was boarding the boat
Andy.