Agreed, one or two small backup is a "better to have", not just for the case of failing (running out of fuel), but losing too. I prefer Zippo + Flint combo but ultimately I have lens in my glasses for the daylight.

Agreed I also slept in Slovakia, didn't encounter bears, but I would recommend to leave the food in the car or hang it up on a tree 100-150 meters away from your sleeping place and high enough to make it unreachable for bears. If you can't avoid the meeting up with the bear and you have food, just leave most of it behind, let him/her eat it. If you behave logically with the bear (not being irritative, not starting a fight, not defending your food with your) you should be ok in this case.

+1 for useful link. This would mean roughly 400 kcal/pound.