Mine don't 'go out' at all. They can go to parties or to a movie, to a friend's house as long as I know where they are and who else is there, to the beach or pool or to the city or shopping in summer, etc. But young teens and pre teens hanging out with no purpose or not engaged in some organised activity is not done here.
They could play outdoors when they were small and actually played on bikes or skates or went to the pool or the rink, or whatever. But once they got to 12 or so that was the end of it. They got their driver's licences at 16 and some friends usually had a car available so their options increased as far as distance travelled, but there was still no question of just hanging around. 16 is when most got a pt job too.
I never set a curfew for outings or limited their outings, just warned them that if grades started to slip as a result of burning the candle at both ends they would be curtailed, and it was up to them to manage their time, which they did.
I never did a set bedtime either. They were usually tired by about 9ish so that is when they went as children, but as teens they had much more staying power. They are usually up until at least 11.
Do none of the children get homework? Do none of them babysit?