I usually take my sister and a friend of her's every year. They're 16. I let them do their own thing, they know what panels to attend and since they have the under 18 badges, they can't get into anything adult related at the con. I check in on them throughout the day and we meet up for meals and they're usually in the room when we go to the rave around 11 or midnight. The con's a very safe and secure environment and if your son and his friend stick together they'll be ok. :3 Depends on the day and what the final schedule says. Usually the panels that go on late are the adult panels, but they have the game room and video rooms open late as well.

I'll be cosplaying 1950's Rarity from MLP. I also have a group that'll be doing all pony cosplays one day. There will be a punk rock Rarity, a Flapper Rarity, Butchershy, Pinkamina, and maybe an Applejack.