Well, I'm only 15, and my parents (more like my mom though) let me go to whatever. The only concerns my mom has is that I'll get hurt (if it's a hardcore show) or I'll come home way too late. Way too late for her is 12:30, and I've only come home past that twice. She doesn't get pissed, just naggy.
I've only got hurt twice too, though I did sort of test her when I fractured my upper arm at BDM