Okay, the Halloween thread is open! A couple of people have asked questions, which I'm going to address here in case other people were unclear.
1) Does my character pick their own costume? They can! If they don't, though, Jareth will pick something for them. Costumes are not optional.
2) Do I have to participate in the open thread? While attendance is mandatory, if you absolutely don't want to post in the open thread, you don't have to. But it will be good activity, so why not tag in?
3) How does this work? Your character walks into the ball and becomes their costume. For example, if they're dressed as a, I dunno, cat, they actually become a cat. So keep this in mind when you're picking your costume!
4) Will people recognize each other even in costume? No, people will not, unless it would make sense for the costume that they're wearing. For example, if two people dressed as, say, Clark Kent and Lois Lane, then they would recognize each other.
5) Will the characters remember how they behaved at the ball on next day change, when they are back to normal? Yes. Yes they will.
Okay, I'm drawing a blank for other questions, so if you have one, you can post it here and I'll respond! I'll screen comments, so ask away!