it seems to me like all of those things are just everyday occurances, part of the "amusement park MO" if you will.
Just like McDonald's serves fries, amusement parks have people, and the things they do while in public.
I agree with a couple of the big points here like vandals, line jumpers and bouncing basketballs (I can't stand vandals ANYWHERE - true, I run into things with carts at wal-mart but that's not the same as breaking off a fence to try and look like badass), but saying you can't deal with people at a park is like saying you can't deal with flourescent lighting at the grocery store. It's always going to be there, unfortunately :-\
-Josh