What I read earlier led me to believe the biggest problem with the ship's water is the temperature (which of course can be remedied by some time in the refrigerator, eh?) I did see a television program that covered what they go through to get us potable water on board. Very impressive. Besides desalination, they remineralize the water, which should result in very pure, very good-tasting water.
Thank you all for your reply's . I will take your suggestions and pack a few and refill them on the ship. We do that at home, If we are going for a drive or playing golf my husband puts a water bottle in the freezer which has melted by the time we get to the golf course.