I always carry boxed wine and have never had a problem and I have been on several 14 night cruises and have basically had a box in each suitcase along with other alcohol. It has never been a problem. Just make sure you don't have any in your carry on luggage...this is the only time that I have seen people get caught. Hope this helps...enjoy your cruise!!
The do not like it if you bring it on board. But, if you back and they don't find it or break it delivering your suitcase, koodos.
They do sell a weekly special on wines where you can buy 4 bottles for a certain amount of money. If you know you are going to have it with dinner every night, I would do that.
We talk the travel agent into sending us a couple bottles for purchasing the cabin through them. And if you go into the bigger cabins, they have a concierge floor and open bar for a few hours each day. This will be my first experience with that setup.
I'll be back from a cruise on the Jewel in about 2 weeks, so if I find out anything new, I'll let you know.