We visited Niagara, NY when my parents were visiting. They really loved the film. It gave them a sense of what they were seeing. They said that it would have been nice if we started with that.
To me it was an indoor sit down experience that I planned as a break from all the walking and physical exertion and time away from bad weather.
I loved the film.
It is a pity that tripadvisor does not have a selection for family with grandparents or something to that effect so I selected the option couples visit.