They are all great points relgate. I will practice my angry between now and the next trip..... The main thing I guess is as you stated, filling a the small gas bottle. Do you wait till its empty or do you fill it with a third to go just so you don't run out. Do you have any idea how long the maximum length of hose is? Also, I signed off on our van last week, so I guess it would be too late to add in now?
I wait till empty then refill. Even on a 7 day trip I don't go through a whole bottle, so it seems to last a long time.
My understanding is that 3m is the max length.
Keep working on the angry. Another tactic I use is to carefully show everyone the correct technique for cooking and cleaning on my bbq. That seems to scare them too!