I think a lot depends WHERE you live.
Different answers for different areas. Need to pick the suggestions based on where 'you' live.
For me from up North Wisconsin. Stormy weather, sub zero temps the ticket of the day and power outages often. I am not about to take any chances of damaging my home.
I would never leave the fridge running filled with any food. Empty, door propped open and it would be unplugged.
Leaving your heat set at any temp won't help if there is no power to run it. I.E. frozen pipes, pumps, appliances,etc.
Just shutting off the water doesn't take care of any low points within the lines that still have water in them.
I called a contractor about doing that 'once' and they said no way because they could not guarantee that all the water is out and protected from freezing in a power failure. That and they had seen drywall become affected in a power failure in cold weather in empty houses too. There experience in ""my area"" with trying to winterize a house to leave was not to do it or risk damage.
Soooo, that all said. I always had a caretaker stay in my home to keep it safe when I Snowbirded to Florida.
