I am in the same boat. I only booked my trip last week, wan't even thinking about costumes! I'd like to do something simpler and park oriented. My current frontrunner is a Tiki Room totem pole, which would just be the faces aligned down my shirt with my head as the top one. No idea how to pull it off though!
My one tip is to keep it cool. Based on last year, do not underestimate how HOT it could be. It is Florida after all. I was blazing in my mostly black and full makeup get-up from last year.