Don't forget to see the sights. Redwood groves, Tuolumne, Vernal & Nevada Falls, rafting trips on the Merced?
Clouds Rest is a great hike IF your kids have a long attention span for hiking. From the summit, you can see Half Dome, North Dome, El Cap, most of the valley, Tenaya Canyon & Lake, all sorts of Tuolumne domes, and neighboring mountain ranges.