I swapped it out myself. It fits through the door easily (with a helper), with fridge door out so can continue into the opening without turning it (backed the fridge into the camper to the opening). I added insulation to the side and top walls of the opening.
Challenges:
1. A trim on the bottom rear of the opening helps keep fridge steady but getting the rear "legs/pads" of the fridge over it is tricky.
2. Figuring out how to grab it while pushing into place is important. I broke a brace that supports the control facia (don't grab it). Luckily the old fridge had the same brace and I swapped it out.
3. the seal that prevents backdraft doesn't seal very well after install. Used duct tape to seal it up behind the fridge.
4. the install screw holes on the door edge were not drilled out. Had to pull the fridge out over that trim piece again to drill them.
Nice not having to remember to switch the power. And not worrying when power or gen go out.