We went to the Bahamas last year and I was told that water was incredibly expensive there and we are water drinkers, so I packed a case of water in our luggage. Spaced it out between our bags and didn't exceed the weight limits at all. Unless you are already tight with weight, it doesn't add as much as you might think. If each of you have one bottle per day for 7 days, that's 14 leaving 10, the random nighttime bottle, say 2, each take one with you for the ride to the airport, that means 3-4 per suitcase or as mentioned, you can give them away. Just a thought. I wasn't trying to be smart, I hope you didn't take it that way.