I met a guy in Alaska that moved up there with his wife and kid and lived in a wall tent the first year - including winter. He moved up there before even finding a job. They were close to town, and had a bunch of home-canned food the wife had prepared before they moved up there.
On an early youtube account of the finding of these two women and boy, it said they were only about 1000 feet away from an established campground. Although the CG was probably closed for winter, and the roads snowed in the 10 to 50 miles or whatever back to a paved road.
I’ve gone camping in the winter with no issues, but not for extended periods of time.
I saw someone online say they were 9 miles from town but I did not check it out at all.
Canned goods freeze, when I was living in Minnesota I kept my beer in an ice chest with a hot water bottle to keep it from freezing and had to change the hot water frequently.