Yeah, laser tag is probably amazing. I used to play it in my teens a lot, but in one of those places where you're in an arena.
But, I've had a think about the battle royal, and I've made a kind of graph of a bunch of people, and then drawn "lines of connectedness" or whatever to link people that know each other, and I'm going to drop a few who aren't as connected. So there will still be a chance someone has to hit a target they're not familiar with, but more than likely they'll be ok.
I think I might give up on the whole secrecy thing too, just in case people get freaked out, or if they don't have any common sense and need some advice. But I'll call it a test run.