I'm glad the investigation was done quickly and that the family seem to be content with not suing. And I really hope the park retrains their employees... because I can guarantee that man passed at least 2 workers before even getting on the ride, and more may have even watched him get on. Handicapped people take longer to load in, so the other workers would have gotten their jobs finished by the time he entered his seat. So massive fail as a whole team.
You're welcome WindSpirit.
Seat belts are a relatively new thing to roller coasters, and not all may have them, depending on what type of coaster it is and whether the coaster is in an amusement park or a county/state fair. But about 10 years ago there was a big hub-bub about adding additional safety measures along with the ones already in place, so most coasters had them added and new coasters were built with them already in place.
But yes, coasters can take a lot out of you physically. Especially the wooden coasters, which give a bumpier ride. The steel coasters have a smoother ride, but they usually go faster since they can be built taller. The one I worked at (Wild Thing at Valleyfair), tops out at 74mph, and that was tough for my neck to take sometimes. And it's not even close to being the fastest coaster... there's one in Abu Dahbi that goes 150mph! I cannot even begin to imagine that ride.