Kaddyuk
Let's imagine it's the first night. it's now beginning to get cold and you're hungry
And, er there are a couple of hundred corpses to get rid of.
you can use sections from the wreckage to provide a make-do shelter. Careful! Sharp edges!! Heat from kerosene or whatever cardboard you can find from the hold and you are in pretty good shape.
Unfortunately, the survivors may have no alternative but to eat airline food.