I right there with ya! 
It also amazes me that people think that signs posted saying that handguns are not permitted makes the place safer. Personally, I would feel much safer walking into a place that had a sign posted stating that hanguns were welcome...encouraged, even.
There is only one explanation for it.
The amusement park owners KNOW that common criminals are not going to be concerned. (And of course, even a truly weaponless enviroment favors the thug, since they will be young, strong men used to fighting, and will be choosing their victims.) They have to know that this is basically disarming potential victims.
They HAVE to know that any nutcase planning on shooting the place up isn't going to be stopped either.
So the only explanation is that they are MORE afraid of CCL holders/armed citizen than either thugs or murderous nutcases. Scary, isn't it?
Or more likely lawsuit. The scenarios run like this:
A. Rampant nutcase smuggles gun in, kills 15 people. Since he violated policy by bringing the gun in, no lawsuit that will fly!
B. Rampant nutcase shoots 2 people, then takes two dead center of mass from an armed citizen's weapon. Families of the two dead patrons AND dead nutcase sue the park because they allowed guns in.
So the difference is 12 fewer stiffs with scenario B than A. But in scenario A, the corporation is not sued, so they prefer it.
And that, gentlemen, is why their should be some CEOs swinging by the neck from the cotton-wood branches in America.
