One of the easiest hike and best view of Yosemite is Taft Point and Sentinel Dome. Each are 2 miles round trip, 1-2 hours each to complete, with parking lot right off Glacier Point road. Kids as young as 5 years old and senior in their early 70's should be able to do these hikes. Of course you can just drive to Glacier point for a great view of the Valley and Half Dome without having to Hike. However, hiking is a great way to enjoy Yosemite, and for those who don't want to walk too far for awesome views, Taft Point and Sentinel Dome are great options. At Taft Point, you will be testing whether you are afraid of height as you will be looking down the valley with no steel railing holding you back (you will peek down lying on your stomach). At Sentinel Dome, you will get a 360 degrees unobstructed view of all of Yosemite; a perfect spot for your video camera.