In the end, they stayed in the derelict bunker for three days. The vehicles of the convoy had turned out to be in a worse state than Sunny had thought, so it took a lot of work for Kim and Samara to get them in shape with Quentin's help. The patchwork repairs they implemented were not pretty, but at least the transports were not going to fall apart on the road, stranding dozens of refugees and bringing the convoy to a halting stop.
In the freezing cold of the polar night, stopping meant death. That was without even considering the swarms of Nightmare Creatures prowling in the dark... the world itself was more than happy to kill them.
