I think that was intended for figure out ways to beat some of the time sensitive quest, where the trigger might be you talk to someone, enter an area, etc. If you long rest then the NPC might be dead and change the subplot. With multiplayer I don't know how they handle long rest(like can one player go long rest while others don't? or a voting system? etc.) Anyway, I do single player, and I think multiplayer could be fun as well.