Well, for a long time, and up to our last cruise not all that long ago, we each "snuck" a 6 of bottled water each in our carry ons...The more I think about it, the less sense it makes...why shlepp the stuff? why do folks do it? we get a buncha water as perks, and when it runs out we refill em with ships tap water and put em in the frig...or stuff em in the ice bucket.
where d'you think they get water from....well yes...that's EXACTLY where they get their "fresh" water from...no ship can get even close to carrying enough...we've taken a few ships tours (take one if offered) and seen the desalinization/purification plants. amazing stuff...and besides, it can cure gout, grow hair, relieve rheumatizz…..