There's a haunted event called "Tracks of Terror" in Laurel, MD. It's $20 for the basic event but for $35 you get VIP which includes 4 hours of open bar. I think it'd be fun for cosplayers to meet! I am already going with 1 other person. All the information is in this link
If you decide on going message me on FB, I am not on Cosplay.com as much anymore!