I have to ask....where were you staying?
We once stayed in All Star Movies and it just happened to be at the same time as the tour group of teenagers from Brazil. That was a little rough to deal with because they were extremely excited and out of that excitement they were running around very loud and wild, running over my kids and just a little out of control. I honestly, just move out of the way and try to remind myself to breathe and ignore the chaos. (Then we switched to Port Orleans the next day and never looked back).
As far as light poles and such, I do think there are certain behaviors that should be taken care of by the parents and some kids are crossing a line that I never knew existed because really...who thinks it's okay to let your kid climb a light pole?
Other things like kids that are cranky, whining, crying and such don't bother me at all. I actually feel bad for the kids.
I just think it's better to try to tune everyone else out a little and concentrate on your own kids or family. My kids are very well behaved, and I like to think we are not too strict, but certainly not too lax either. My oldest has Moderate/Severe Autism and while he is normally pretty simple and carefree, there was an incident last June at DTD that came totally out of the blue. He has been there before, several times and never had a problem, however this one day he saw something (still can't figure out what it was since he has limited language) and he was terrified to the point where he jumped out of his stroller and took off in the other direction. I had to drop my things and take off after him and just hold him until he calmed down. There was nothing else I could have done. There was no way of preventing the incident since he was fine every other time we went and there was no known 'trigger' to the incident and there was nothing else I could have done but hold him. He would have cried more and fought more had I tried to take him anywhere else (hotel, bathroom, anything). Once he calmed down, i was able to talk to him and he was fine. But I had plenty of bad looks because to the outside world he's a 6 year old crying and possibly "annoying" them. But there is more than what meets the eye in some circumstances, some kids do have other needs that are different from our own needs which makes them very hard to understand. When I see other kids doing something completely unacceptable (like running in front of buses), something that is dangerous to themselves or others, I do get mad at the parents, in part because I am just thinking..."WOW...you stupid stupid person...you are taking everything for granted! What I would give to have to only worry about the normal lessons we need to teach our children. To worry only about not jumping in front of buses, climbing on light poles and apologizing to others when we wrong them in some way. To not have to think...if my kid gets lost, he can't tell them anything more then 'my name is Christopher' and therefore have to place temporary tattoos someplace visible because if they cant see my number, he won't show them."
I understand the lady with the kid with cerebral palsy saying that she would love for her child to climb light poles and disturb hot tubs because it is a much easier thing to fix, control or worry about that your child's entire life and future.
Be kind, for everyone you meet is fighting some kind of battle.