The talk about their pasts is best described informative, but at the same rate it shows the emotional and in some terms physical struggle everyone had to go through in order to be where they are now. Knowing each other's weaknesses be it past or present, will help to understand each other better no doubt.
The Campfire was extinguished after an hour when the weather kept getting colder with no sign of stopping, they weren't training at that moment so it is only sane if they went all home, they were all tired.
However, the younger were not tired of putting a thought that was imprinted in their minds, to action. I'm talking about the power moves that can determine which level one Fire Controller is worthy of identifying with.