Unless you orchestrated this event for them and convinced them to go through with it, I don't think there's anything else you could possibly do to make things worse.
4chan or something would destroy these people. I hope I have not done something bad by posting it... I am really a strong believe in POE Red's original prime directive. Be nice, laugh silently among friends.
It's called LARP because that's a noise many of the participants make, like when they get winded from having to stand upright for more than ten minutes and they gotta sit down *huff puff wheeze ugh LAARRRRP*