I remember watching this movie with Dad. Not in 1973 - I was too young then - but in the early-mid '80s. Dad said it was very good, and was based on a true story. There was actually a remake of it a few years ago. Anyway, I recall Dad in his recliner, chair leg in upright position, newspaper in hand. I was on the sofa. Not sure who else was present.
An even older movie Dad very often said he liked was Ben Hur. It was replayed pretty regularly on TV - at least every year. One time he changed the station to it, and it was in the middle of a horse and carriage race scene. Dad, with a bit of humor, said something like, "Oh, you'll like this." And we might have been watching something else, and it had gone to a commercial. I just recall very quickly saying, with a bit of humor myself, "Dad, pleeeze." Of course, he turned back!