If conditions get too bad before you can get a camp stove, you can always make a
Buddy Burner or Hobo Stove if you have enough candles or parafin wax on hand. (you don't have to cut the "door" in the bottom of the #10 can, you can punch holes around the bottom with a can opener - this allows air for the burner. The "door" on one side design is for windy conditions.)
I always took a couple camping with me in case of rain, before all these new-fangled bottled gas thingys!