I tend to buy wine as and when I need it, I find it preferable but the packages, which you can get on the ship, are slightly than the same wine on the wine list. You don't have to finish your wine in one sitting, it will be held for you, partly empty or partly full until you need it and I can see no reason why you cannot take it on with you to another area as you have paid the ship's price for it. .... Neil