Catrin, how about giving the campstove a little practice run? We just got a new Coleman for our last camp trip and it was super easy to use compared to the antique my husband was using. If you do try, make sure its a well ventilated area.

If I remember correctly, my husband was able to attach, remove and reattach the fuel canister. It didn't have to remain attached once opened. I will double check with him later on today. I'm sure the instructions will state clearly how to use it and store.

I have not had any issues with the new (or even the old) campstove leaving marks on any of my pots and pans. I use stainless steel and stainless steel with copper bottoms.