Another video, this one is an official US National Park Service video about the excellent Hermit's Rest free shuttle bus route on the South Rim of the Grand Canyon - IMHO something very definitely to do if time allows:
Be sure to get off the bus at most or all of the overlooks. If you decide to walk between some of the bus stops on this route then I would highly advise keeping to the road especially if you have children because in places the trail is perilously close to the edge with extremely dangerous drops.