If you decide to use one, get a very high quality RV or dryer cable since they’re designed to run on load for long periods. I personally would avoid using additional adapters.

I only have a dryer hookup so I have the 10-30 version of this, its pricey but high quality. A lot of the cheaper cords, the plug is too shallow and the mobile connector prongs stick out and are exposed. https://www.amazon.com/Parkworld-692231-NEMA-14-50-Extension/dp/B072BNG188/