We always setup anything new in our camp backyard so to speak and might even make a couple of night camping there just to figure out how things work and not work...
We also found out what things require 12VDC for memory cards, controller cards, thermostats, etc. i.e. No 12VDC for the control circuits - no air conditioning working on 120VAC etc... Those kinds of things are very tricky until you figure what all needs to be working. Seems like every trailer has something unique to just that brand of trailer.
Seems to have paid off for us.
Also being avid tent campers I think I would keep on camping new trailer working or not haha...
We survived quite well in the past with a bag full of D-CELLS and some white gas in a can...
Even now our modern trailer setup is more or less our modern bedroom for the night. Most of the things we do is outside around the camp site with a nice bon-fire going.
It took some planning and beefing up here and there but now we do quite well camping off the batteries and do almost anything we do at an electric camp site with the exception of air conditioning and high wattage items like the microwave etc...
For us the modern appliances are not the primary items although we will use them all the time. I like to end my camping day watching some OTA HDTV (News,WX, and NCIS programs) haha, and catching up with the emails, checking in with the kids, and watching the on-line bills.
I am also a HAM RADIO guy so all knows what all that entails... I can definitely keep busy without the modern trailer setups.
Roy Ken