We enjoyed dry camping on a beach for seven winters, until 2009. Our costs to do this was to have a good solar power system, and about ten dollars a day to stay and pay for water. To indicate the drop-off in RVing in Mexico, as we know it, we had a Christmas dinner at a park in southern California last Christmas (one of several in the past five years held there) and 21 folks, or about 12 rigs,attended who had enjoyed the dry camping beach that held no more than 15 units. These people did not go to Mexico last winter, and nearly all of them will likely never drive there again. They cite higher prices for fuel and toll roads and a big one - the insistence to ask for American Dollars for payment of RV sites. Back in the day, even while spending time dry camping, we always spent a fair amount of time, and pesos, in RV parks on our Mexico trips. In my own opinion, Mexico is turning its back on RV tourism in favour of fly-in, short term stays. Thus, hotels and condos get built, land becomes more valuable, RV parks close for one reason or another. Security, or perceived lack of, underlies a lot of that.