Well! I would normally suggest asking you
With our Winnebago the generator is designed to be use whilst travelling.
There have been many discussions before about using appliances when moving. Lyn (my wife) and I are in the camp that thinks when your times up your times up, so we have in the past prepared snacks using the microwave (we have both even showered and got ready en route when running late to friends houses
People get all shocked about this, then happily get on a luxury coach, walk around, use the loo and go to the bar and enjoy a coffee whilst being driven around by a stranger
The Dometic range are air cooled, so not a problem, and I have never heard of anything or know anything anecdotal to suggest there is a legal problem. I have asked around in the office and no one else has heard anything negative either.
We have fitted Dometic generators for some years now and I have had one fitted to all of the European vans that we have owned over the years. Driving through the South of France with the roof A/C running, chillingly well, courtesy of the generator is an excellent way keeping cool