We plan on bringing our own bottled water on our November cruise. We brought our own on the Carnival holiday with no problem. They better not say a thing about this or we will adjust our tipping to pay for thewater we puchase if we can't bring our own!!!!!! That will be the end of our cruising with NCL also!!!!!
I would reccommend you take your water thru the carry on xray so that you can show that is really water and not vodka or some other alcoholic beverage. That may be the reason for some "water" being confiscated. We also left our Pepsi in the plastic wrap unopened and had no problems at all. Hope this helps.