They had the ability to make a fire, which clearly made a significant difference, as it so often does. What intrigues me is how much media attention this fairly routine operation received. I think this is mostly because of the young children who were involved. had it been a bunch of 17-25 year old males, we would have never heard of them.
I'd bet you $5 dollars that one or both the adults were smokers (of tobacco or...something else). As woefully unprepared as they otherwise seemed to be I imagine they at least had lighters.