Hi! For what it's worth, I'm leaving Monday afternoon with 9 high school juniors and seniors for 3 nights at WDW (2 Disney YES programs). They wondered if they could go to Pleasure Island at night to go 'clubbing.' DH and I squashed that idea pretty quick.
I have no problem with leaving them at the gates to MGM and them taking the bus over to MK later where DH, my kids, and I will be. Neither do their parents. One chaperone will probably stay at MGM with them, but that's not a requirement.
When we go to DTD I will not hold their hands, and they can scatter to the winds WITH A BUDDY!!
Our requirement is simple. No one tours alone. You don't have to hang with us old folks, but you're not playing alone. Everyone is with someone with a cell phone. I have their numbers, they have mine.
With my kids I think the rules would be the same. Would I let DD at 15 go to DisneyQuest alone? Sure. I'm sure DS (who'd be 11) would go with her. But I'd probably be in DTD.
I hate to suggest this, but maybe take a friend or cousin? I'd feel better with 2 together. My sister and I always behaved better together. We kind of enforced the rules together.
(DH and I both teach HS biology. DD10 and DS6 are skipping 4 days of school to go with us!!)