Actually a tent is not a bad idea too, set up a tent in a central room away from exterior walls, fill it with your warmest blankets, lay blankets over the tent even, now put the family inside the tent and you will be surprised how warm it gets in there. Fire up some iphones and laptops and plug into your Bluetti and your set for the night.
Absolutely ? that is the way forward, could be the difference between life and death