Longest I have gone is 6 days w/o power after big windstorm in 2006. Saving grace was gas fireplace (show, not for heat) in one room that if we "closed" it off using blankets at the door ways heated to 78 degrees and gas water heater for hot showers.
Otherwise after a day or two you just learned to deal and be entertained in other ways. I went skiing a lot, the areas had power.
Glad to hear its coming back to all the folks hit by the strom. My prayers are with you.