I'm just working up to my first 5K, maybe if I can keep up the training, the 1/2 will be in 2014. Do people dress up for the 5K?
I ran the Royal Family 5k last Feb and saw many people dressed up.

For those who are thinking about how to make ears/headbands, I have these pinned on Pinterest.
http://spoonful.com/crafts/mickey-a...ickeyMinnieEars|InHouse|110112|Craft|KN|famM|
http://somedaycrafts.blogspot.com/2010/10/budget-friendly-disney-shirts-and.html (scroll down for a pirate headband)