So..do we want to choose a non busy day? Since were trying to decide early, I know we could probably pick whatever say we want, but a lot of groups are always pretty insistent on Sunday, or the second day of a con. So, if we do pick sunday, theres probably a much higher chance of it clashing with another photoshoot than if it were on Saturday.
Also, if any of your other costumes are really hard to get out of, like armor, or face makeup etc, then you want to take that into consideration too, because chances are a quick change wont be possible, and if 2 of your photoshoots are schedualed on the same day, you'll most likely have to miss one.