We had the same problem twice, one for 8 hours and the other for 6 hours. We have natural gas as well as electricity and so could still heat meals, but we were worried about the food in the freezer thawing. We kept the doors closed and didn't lose anything.
Ya, that is the biggest worry, I have a chest freezer and we stock up on food on sale.
Yes we do that too, especially when there is a drought