Family.
The trip to the Moonlit Caves went smoothly, and when they arrived, no one was around. Normally, someone would stand guard here to make sure that no one made trouble and that no monsters managed to escape, but because of the battle earlier, the place was completely empty. To make it easier for Edward's family, Ark set up a tent for them that they could sleep in. Ark, Ephine and Atar naturally didn't need one, since they preferred sleeping in their wolf forms, but for a regular family of four, a tent was a must.