Are your tanks exposed to the outside air. If you have insulation under the unit and you run your furnace you should be OK.
I just looked at the brochure for the Mountaineer 335rlbs and it does have insulated tanks and ducted furnace so no problem there.
When we had another brand of travel trailer. The fresh water tank was under the master bed,
The tanks were strapped to the bottom of the unit and the gray and black water valves froze. I was able to put water in. I just couldn't drain till the temps warmed enough to thaw the valves.
You could use antifreeze for flushing which should prevent this problem. And add a gallon of antifreeze to the drain if you plan on using your grey tank. Dont forget about the hotwater heater bypass if you need to use that.
If you are concerned about the ability to keep warm. Your furnace should be adequate. An extra blanket won't hurt either. Make sure your propane is full before the trip.
Modified dry camping:
Your low point drains will have some antifreeze left in them from your winterization if you don't remove the caps and flush them out. (which is probably best to leave the antifreeze intact for this trip)
Bring bottled water for drinking and cooking if you don't flush and sanitize the fresh water system.
Maine is beautiful.
Enjoy your holiday, sorry for the sad news,
maybe we will see you at next years rally.
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Chris Donna and Oliver the rescue Dog.
Old 3255RL It is a weekend warrior and less than 15K miles. Mostly sits at the house. Home is where the heart is.
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