I was Leona from Dominion Tank Police both Friday and Saturday. (I had a big, red sign that said "Police Stop").
Was with a guy who was casual cosplaying someone from Sword Art online (IIRC) and was harassing people with annoying/random questions. He was the one bothering the guys in the black coats about cheating (sorry-didn't know the series).
I am uploading some photos to my cosplay account, but currently is slow going. If I don't have a tag on someone, please let me know.
MEPACon Fall 2013: Pirate!Fem!France (with a Pirate!Fem!England); AnimeNEXT 2014: Leona (Dominion Tank Police), and possibly Tenko Kugen (Our Home's Fox Deity)