Last time I checked, teenage cheerleaders don't send people to the hospital with injuries cause they yelled GIVE ME A B in the middle of a queue. Meanwhile, rowdy drunks can, and do, get violent, which can lead to someone going to the hospital. Though, I have never witnessed violence myself. Notice, I have said I experienced ROWDY behavior, not violent behavior.
I'd be more offended if a rowdy drunkard cursed up a storm in front of me, yelling obscenities or explicit nonsense at females than a few 16 year old girls cheering their school. Annoying, yes. But not to the point that drunks get.
And if you saw what those cheerleaders were doing, then report it to security. It would be Disney's fault for not stopping them from the misbehaving. They would deserve to be punished. So no, throwing things at people are not okay. If anyone was causing an unsafe environment, they need to be escorted off property.. IMMEDIATELY!!!!!