LOL, Sorry a waiver is just something to stop some from suing you. Think of it as a hurdle. The more hurdles you have the harder it is to be sued. Even if an adult signed a waiver lawyers can and do find ways around them. For piece of mind you'd best have insurance and of course for haunter insurance you just call Ken. I would ballpark it at a few thousand or even less.
http://www.donatinsurance.com/





