I do know of exceptions and there is a fix but MOST campgrounds all sites have standard 15 or 15/20 amp outlets. A 30 amp site also has a 30 amp outlet (TT-30) and a 50 amp has both 30 and 50 amp outlets as pictured above.
On the off chance you find a campground which like one I stay at only has 30 amp outlets, No 15/20.. You can get an adapter. I recommend a "Dogbone" type where you have a 15 amp plug, Usually right angle, on one end of a cord and a TT-30 outlet on the other. Wal*mart, Camping world, Most RV stores and in many cases the camp store will have them
Failing that there is a PUCK type adapter.. 30 amp outlet on one side, 15 amp plug on the other. I have both kinds.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times