sites near san francisco
You will find the RV sites near San Fransisco to be very expensive. There are also not many that are located right in the city. You will probably need to stay well out into the suburbs. We stayed at the KOA in Peteluma some years ago and the park was OK, but the rates are very high. I think that you would be wise to purchase a copy of either the Trailer Life Campground directory, or the one from Wheeler's, or Woodall's. We consider the first to be the best. It will cost about $15 but it lists most of the RV parks around the country.
If you visit Las Vegas, I suggest that you stay at Arizona Charlie's as they have good rates, a nice park and free phones to every site. My second choice there would be Sam's Town RV park. If you visit Laughlin, I would stay at Avi Casino there. Wickenurg is also a very interesting place to visit and you must see the Grand Canyon. I don't have a park that I would reccomend there.