When you mention the amount of water you carry, I'm reminded of a camping trip with some friends. We were planning to stay a weekend, but the weather didn't allow us to, so the extra day we were there was unforgettable, not because of how enjoyable it was.... Quite the opposite: nothing was enough, not the water or the food. I watch some reality shows where people compete without eating anything for several days; I couldn't do this one day without water or food, I thought I'd faint.