I have a “Carefree Vacation Screen Room"
http://www.dyersonline.com/carefree-16-17-vacation-r-screen-room.htmlAnd if you put rope lines at each corner of the awning down pegged into the ground, mine stood up in 40 mph winds, also use “Awning DE-Flappers” which will keep your awning from bouncing in the wind.
https://www.amazon.com/Awning--Flapper-Camco-Camping-Equipment/dp/B01IB9CM8O/ref=sr_1_6?ie=UTF8&qid=1470281587&sr=8-6&keywords=awning+de%3DflappersWrap your pipes with insulation, especially those which are exposed to the outside and put some antifreeze in your black and gray tanks. Carry bottled water inside the unit for drinking and washing dishes, and put a bucket of water near your toilet for flushing it. I have done snow camping with my 5th wheel in Colorado and it is a challenge and also a great experience. You’ll just have to sweep off your awning and the top of your RV after each snowfall.