I guess that technically, I would need to complete all 1001 days for this to be considered accomplished. However, this has become such a habit, and a fairly easy one at that, that I consider it checked.
I usually have a gallon down the gullet by the time I go to the gym, and then god knows how much more I drink while I'm there. I still lose 2-4 pounds of water weight on long sparring days though. A little scary.