We went last month with a bunch of preteen/ teenagers. the oldest were 3 15 yr olds. We let them go off on their own in the parks each day, met up numerous times, and don't forget the handy dandy cell phone. I did let the 2 15 yr olds that were traveling with me go back to the hotel one day by themselves. While we were at the hotel, they were allowed to go to the food court by themselves, the pool etc. they could not go it alone, they had to stay together, but that wasn't a problem since they were connected by earphones anyway. You never saw them apart for longer then a few min.