Unwritten rule: pack water where you can reach it becomes important at exactly the moment nobody wants to stop and deal with it. Hydration should not require unloading half the vehicle.
The move that saves the day: carry a refillable bottle and collapsible bowl.
Keeping water within easy reach is one of those little things that makes a huge difference on the road. A refillable bottle and collapsible bowl are simple, space-saving essentials especially when traveling with our furry companions! 
