Anything Belle does at night is usually a sleepover (all parents called to confirm, bedding sorted etc).
If she does go out at night it's only really with parents or grandparents.

Do you mean out with a bunch of friends, no parentals? - Oh actually Belle does go to the movies with her friends but it's no later than a 6.30 show with parent pick up/drop off.
I usually address issues as they come up, she hasn't asked to do anything else yet. I have a feeling she may want to go to the Melbourne Show this year, she can go with a group of friends - I'm not sure how I would feel if she wanted to go at night. It's hard because I did at that age......