This looks like it was a Summer Camp or something. So I would say they should be charged Double for teaching kids that they can do this!
When I was a Camp Counselor I was repsonsible for all of the decisions to go or NOT go. I was expected to have the experiance and knowledge necessary to keep the kids out of harms way.
I am gonna have to say that this bill is way more justifyable than the kid who broke his ankle in NH.
But that is just my opinion and, well we all know how opinions are.