Your parents are not remembering things correctly. No one has ever died at HM.
http://www.orlandosentinel.com/news...aths-at-walt-disney-world,0,7863626.htmlstory
http://en.wikipedia.org/wiki/Incidents_at_Walt_Disney_World_Resort
Whats funny is that you are referring to wiki for facts. You do know anyone can edit anything in wiki.