Any place where underagers gather potentially without parents... whatever it is, parents need to stay involved. Don’t let your kids go ANYWHERE without you or someone you REALLY trust. These kind of things are a melting pot of all kinds of bad influence. When I was in my teens, it was common to trade magic cards for weed. I traveled around the state and hung out with lots of weirdos. I was grown and could defend myself, but there were definitely predators, and sadly, plenty of players younger than me.