While visiting Yosemite, if you find yourself traveling the east side of the park(395), I can recommend staying in Lee Vining at Mono Vista RV. It's located about a mile from the road(120) leading to Yosemite's east gate...the drive up from 395 is very scenic.
The campground is on the outskirts of town where there's a couple of good restaurants and Mono Lake is nearby. The ghost town of Bodie is an eerie visit into the past and worth the price of admission. Lots of Jeep roads.
Beware, Mono Vista is not a 'one night stay' type of CG...you'll want to stay longer - I wish all CG's were like this one.