I wouldn’t allow it if there wasn’t boys in one tent and girls in the other, and adult supervision from someone trained in child protection, like a guide leader. I have experience in this area, so may sound like a Cassandra but..... did you know
A lot of children are abused by their peers or publically humiliated for not giving blowies etc. why would you put your kids at risk of being in a situation like that? Peer peer child sex abuse is rife.
It’s not strangers / old men in macs in the parks you have to watch out for you know?
Also most kids have smart phones now and the opportunity for someone to film someone when they’re asleep, move their clothes, and commit a crime by putting images of child porn up on social media is too high. That’s a crime and can put a child on the the sex offender’s register.
In short, are you out of your mind?
They’re too young to have any idea about consent, or the implications of consequences if things get out of hand. It only takes one child who’s more dominant to change the whole thing into something like a game of dare, and ends up where the police and child agencies are involved.
You may think that’s an overreaction, but I work in this area and it is all fine until it really, really isn’t. Why take the risk?
If they really want to go, why not go to the house with them, let them have a bonfire / marshmallows or whatever they’re having, and bring them home for 10.