Hm... However you like. ^_^ I think the paintball would be first, because the colder it gets, the worse off it'll be. Maybe they find a nice, warm day to do, seeing as the temperature would have some days are summer-y and some are winter-y. Mornings would be cool and breezy, shortening, etc. and then middays might still be quite warm, especially seeing as they'll be covered for protection. Then we'll do the dance.

EDIT: Have you ever seen Community? The TV Show? (Love that show) There are a few episodes where they have a school-wide paintball game at the end of their semester and it trashes the school because the prize is something amazing or everybody thinks it will be. Each one has a theme and the entire school is just absolutely embedded in characters, it's hysterical. That's kinda how I imagine it. Like one paintball fight episode is almost apocalyptic, one is western, and one is Star Wars. But the setting doesn't really change. I think it'd be interesting to do something like that. XD

EDITEDIT: Oh, yeah, I was thinking of how many ways I could word that. It was really hard. XD I'm not naturally smooth, I do much better playing the charmingly humble character. Pretend it wasn't creepy. XD