Indiana Jones Stunt Spectacular Incidents: A number of incidents involving performers in the Indiana Jones Epic Stunt Spectacular have occurred since the live-action show's premiere in 1989. Five different major falls have taken place on the show, including one death: that of a stuntman who died of a head injury after falling during a rehearsal.
Seriously though I am surprised deaths don't happen more often. The Walt Disney parks had 132,549,000 visitors just in 2013. So just in that year alone the average was more than 37 thousand people per day.
I'll bet you it is statistically safer to play and have fun inside their parks than the trip flying or driving there.