It's not about ratting out the site, because this kind of thing has happened at most of the ones I've been too. I'm the General Manager of my company, so have no problem confronting people, but would rather switch off at airsoft. I was in the toilet in the safe zone at one site, come out and someone full-autos the toilet door, about 20cm from my unprotected eyes. I approach the young teen group responsible and tell them where they've gone wrong, making sure they remove mags and clear the chambers in a safe direction. However I reported this to the site owner and he stopped me mid-game to find these kids. I'm the one who ended up feeling guilty.
Shout-out to South Coast CQB, who were so diligent that they questioned why I was in the staging area between games. I'd rather be watched too closely, than not at all.