If you are afraid of heights, your fear is going to kick in as a result of the film, not as much as a result of how high your chair actually is from the floor. The illusion of MUCH more than 50 or 80 feet above the ground is very very real, so keep that in mind. You really do feel as if you are hang-gliding, or flying. The actual number of feet from the floor after the ride begins is irrelevant, IMO.