So if you didn't know, to camp inside Yosemite National Park, you must book your reservation a year in advance or take a chance on trying to get one of the first come first serve sites. The problem is your only a few hours from Sacramento and 4 or 5 hours from LA, so the locals have an advantage on getting the first come first serve sites. I live in Iowa, and if you are like me, planning a trip a year in advance, with kids school schedules and activities, and to travel 1,700 miles to Yosemite National Park is impossible. So a good alternative is booking the Mariposa KOA about thirty miles from the Arch Rock entrance to Yosemite National Park. If you don't want to drive into the park there is even a bus that passes the entrance to the campground. It costs about the same as a Motel 6, but it is clean and has a lot of amenities including a pool, fudge shop, and an ice cream shop. It has tent sites and RV sites, and they are separated so if you are tenting you don't have to stare at camper trailers and RVs. I give it a four out of five because you still have to drive thirty miles to get to the park and the shower house isn't very large so you generally have to wait in a twenty minute line to take a shower. Bottomline, if you are traveling from a long distance I highly recommend Mariposa KOA to visit Yosemite National Park.