20 amp campsite

Looks like you're in San Jose. Just curious, where have you found a campground that only has 20 amp power? I have never seen such a thing. Is this some type of temporary thing set up just for the dog trials, or is this a regular RV park? I've been to many RV parks that will have a 20amp receptacle in the box along with the 30 or 50 amp, but I've never seen just a 20amp plug in an RV park. But in any event, as wolfe10 already said, you should have adapters anyway that allow you to plug into any available outlet so if you don't already have it, doesn't hurt to have it. My motorhome is a 50 amp and one of the very first things I bought the day of purchase was a 50 to 30amp plug, and then a 30amp to 20amp plug. I only have 20amp plugs at the house so when I want power while it's in storage I only have the 20. I also was at an RV park once where the 30 amp receptacle didn't work and the office was closed when I checked in. So I got the adapter out and plugged into the 20 amp and had power.