I thought that I would throw in this comment about voltage and what I did about it. The first year we went I plugged in our surge guard and it had fits as the line voltage was above 132 volts, about the cut out voltage for the surge guard.
The second year I bought a Tripp Lite power conditioner rated for 20 amps, it's for computer apps and automatically brings up or down the voltage and also protects against surges etc. I found that many RV parks had 15 or 20 amp service and I didn't need A/C on the Pacific coast. I replaced the 20 amp plug with a 30 amp RV plug and used adapters to get the right plugs depending on the park. I covered the Tripp Lite with a plastic tupperware container to protect it from the elements, and I tested each electric pedestal for polarity before plugging in.It's a low tech solution that worked well for us.
Tripp Lite