if Powerade has a powder (like Propel) I would bring that and an empty bottom bottle (or two). Save space in the luggage and weight. The water on deck 9 is free and doesn't effect the taste. Tried it the first time on the Repo back from Europe. Been doing it ever since.
We did the same thing - bought four good water bottles and several boxes of the Gatorade and Propel powder packs and used the water on Deck 9. My son lives on Gatorade and it was too much to carry on the bottles. We just dumped the packets out of the boxes into a zip lock bag for easy packing and he carried a few in his pockets with him during the day.
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