Moving PJ Contest discussion for the Party here, bwahahaha!
I think it would work best if we ask for anyone interested in entering to come to the front of the room, line up, and one by one go down the line and show off their PJs, and maybe say something if they want. Then pass around little slips of paper and a pen to the audience and collect them all at the end, have some silly entertainment while we count votes, then announce the winner(s). Probably the only people who are on the forums will be in PJs, and therefore be able to enter, since anyone else would only know it was a PJ Party once they got the con schedule.
As for prizes, I have no idea. Since Demy is one of the panel leaders, it's very possibly the prize will end up being something like a little American flag. XD I can't really think of anything small and cheap that could be related to Hetalia without being specific to one nation. So I dunno about giving yen as a prize. That's just my opinion, though. If everyone else wants yen, that can be the prize, and I can bring some too. XD
Edit: Why do my posts end up at the top of a new page half the time? O.o I have the first post on at least six of the pages in this thread, three of which were all in a row. It's starting to creep me out.