I nearly died twice at a water park. I was with my cousins in Pennsylvania where there's lots of mountain ad forest. We decided to ride the chairlift to see the view, but when the ride was over, I nearly plummeted to my death because it kept going as I tried to get up. That same day, I went to the deepest point of a wave pool and nearly drowned trying to go back because the lifeguards wouldn't let me use the wall for support. My cousin's mom saved my life.
As a little bonus: My cousin's mom is Project Runway's Terri Herlihy. She was on the US episode "Fix My Friend", where the person trying to help with a new outfit publicly humiliate her for being overweight. (I think it's tragic that that she went on the how for a positive experience and this guy treated her like crap.)
EDIT: So I know the second part didn't happen to me exactly, but it's family so that's why I put it.