Someone posted on a different thread - I think it was the HRRR thread - a few weeks ago, claiming to work for USO. Whilst the nature of his post related to HRRR, he also mentioned (to put his post into context) that Dualing Dragons was being themed to a Quidditch game. Now, I don't know Harry Potter, so don't know if that would 'work', and of course can't verify this chaps information, but thought I'd mention it here. I'll see if I can find a link to the post.
Found the post HERE
think it's more he knows someone who works there, so again, no telling the reliability of the info, but there you go.