I know from a very good source that this job was a great formative experience for that jolly employee. Much fun was had!
On graduation night, they invited all the high school seniors to the park so they could do something other than drink and drive. The park stayed open until 2 am or something like that. The manager decided to smuggle in some booze and all the employees in that section got hammered. Unfortunately, they still had to work which is not as fun as it sounds. High school kids make a pretty crummy work force when drunk.
A few days later, some guy were target practicing with a fully automatic weapon and sent a spray of bullets into the park. The senior managers were too busy to come prosecute those who sullied senior night.