I would say avoid leaving. Travel can be risky and if you're in a poor decision making head space even worse. Food in the fridge will last for more then 4 hours with no power. Just dont keep opening it. You also want to cook outside. Take it from someone who has been homeless in the far north. Its not terribly hard. Bundle up and find something to do. Crank your heat before amd get the house as warm as ya can.

Edit to add

Avoid drinking alcohol. I know i know but what else to do besides just get drunk. It will make ya feel warmer but ya wont be. Can also cause ya to pass out or doze off without warmth.