We went to Yosemite Valley area for 10 days in April. On our way, we stopped at the Mother Lode Fairgrounds in Sonora for a couple of nights. We awoke Saturday to a nice fleamarket right outside. The next evening we were treated to a monster truck show. We didn't go but we got to listen to it.
We then went into Yosemite. We stayed one night in Upper Pines Campground and the rest in Lower Pines which is much nicer. The water falls were great and the weather was clear all but one afternoon and evening when it rained a little.
On our way out we went to Columbia for a couple of nights staying at the 49'er RV Park. We took a day trip to Calaverous Big Trees Sate Park.