RE: Wall tent stove question.
I assume you are talking about a spark damper / arrester?
I would leave the damper in the chimney becausethe chimney inthe tent ismuch much shorter than a chimney in your house. It keeps sparks to a minimum when stoking the fire. It doesn't take much to start a fire in the mountains with all the dry pine needles around and those sparks can travel for quite a ways down the mountain.
If we were going when there was the potential for very cold weather we would use real coal instead of wood or charcoal. It will burn much longer at night than either of the other two. I can't remember how much weight but we had two bags for 1.5 weeks. It was either 50 or100 pounds total. We would go to a rock yard and pick our own chunks. Try to get the bigger chunks cause they will take longer to burn than a bunch of smaller chunks.