So when it comes to electrical my knowledge is minimal at best. I plan to take the camper to deer camp in late November and will be able to plug into a standard 20 amp plug in and need to know how he...
You may want to build your own. Determine how long you need and go to Home Depot or wherever they sell 10AWG SO cord. Also get a good quality hospital grade 20 amp male plug and a 30A receptacle like THIS. This will eliminate the adapter.
White to white screw Black to gold screw Green to green screw
Keep a standard 20A receptacle handy and swap it out with the 30A to use if needed.