I"m guessing that you mean your RV has a 50A connector , so, yes, you will need an adaptor to connect to the 30A post at some campgrounds, and another to connect to the 15A outlets at home. They're cheap enough, and easy to carry in your toolbox, so shouldn't be a problem.
https://www.amazon.com/Electrical-Ad.../dp/B06XTQJVNZ
Keep in mind, though, that your heavy-duty appliances, like AC, will bring the load up to something very close to the max for a standard domestic outlet. I can, for instance, run my AC, or my microwave, but not both.