I think cinema alone with pals at 10 is ok but .....
NEVER MAKE ASSUMPTIONS ABOUT PARTY ARRANGEMENTS!!!
Years ago, my then DS2 who was 11 got invited to a sleepover by a boy in his class.
No problem, I agreed without hesitation.
I picked him up the next day, a little crumpled and deflated.
It turned out the sleepover had been in a tent in the garden.
Fine, it was July.
However, the boys had been sent out there at 11pm, the back and front doors locked and not opened again till 9am the following morning.
The tent had fallen down at some point, there was no light, they had no torches, so no chance of putting it up again, and even when they knocked on the doors-no one came.
I was ok about the fact he'd had to wee in the bushes, and had to sleep under the stars
but was really upset that they'd not even been given a bottle of water to drink and no one had checked them.
F*ckwit parents 