As stated above by most members, we use ours most of the time even though our trailer only uses 30amp because of the condition of many 30amp receptacles.
However there were two times where the campground we were going to stay in only had 50amp receptacles. One of those was a Coast to Coast campground located in the upper part of Oklahoma. The other time was a Military campground located somewhere in Alabama - I have forgotten which one. Both of these places had only 50amp hookups but would loan out an adapter if you didn't have one with you.
I also 2nd the recommendation of getting the dogbone type of adapter. The round hockey puck style are cheaply made and may burn out on you.
Barney
