Slight edit to what I'd said earlier:

Go to Dalaran, put it all on, get smashed, /dance. Disturbing the Peace is done.

Don't forget the dancing part!

Oh, and instead of returning all 3 pieces of garb, I'd suggest just selling back the Regalia or Dress and Boots or Slippers. Keep the stylin' hat, use 200 tokens for Brew of the Month and the other 100 for the Pint-Sized Pink Elekk.