I'll be bringing YJ Nightwing. I don't know exactly what day I'll wear it, but I vote Friday, for two reasons:
1. I'll be attending the Modern Warfare/Medal of Honor/Battlefield/Metal Gear gathering at 340p on Saturday as Tuxedo Solid Snake with Stinger missile launcher, so a Saturday superhero gathering, especially in the afternoon or evening, would be tough.
2. The Avengers gathering is Friday at the same time, 340p. If you have the general Superhero gathering on the same day, those people won't have to re-wear a costume on both Friday and Saturday if they want to join this gathering.