Tioga Pass is already closed for winter from what I heard and I know Yosemite is not really RV friendly.
Neither is San Francisco. I live here, so I don't camp here, but I know there are lot of campgrounds of choice in 60 miles radius from the city, where people can easily drive big coach there and take daily trip in dinghy to see the city.
I have 1/2 acre with lot of parking space here, so would gladly host fellow camper, but &*&^&^% city made ordinance forbidding RV parking here.
Even when I bring my coach from storage for overnight packing, I have to make a trip to Chief o Police to get 24 hr permit for parking at my 160' curb space.