Our world is statistically safer today then when I was a teen, I’ve never heard of any situation at WDW that was alarming. Then again my oldest was flying alone at 11.Disney policy states that any one age 14 and older can enter the parks alone. We allowed a 14 year old to head o the resort food court on her own. Would never consider her entering a park on her own. In the parks we have allowed her to wait in line at the popcorn stand, where we could still see her. I'm always worried - we certainly are living in a crazy world!!