We have sailed NCL many times and ALWAYS transport a box of our favorite quailty wine. Yes, quality wines can come in a box. Of course our box is always in the large suitcase, no carry on, and we have NEVER had a problem, as the box is undetectable and there are no corkage fees for the box. Simply place the box in your room refrigerator or the cabin steward will keep you supplied with ice. Just ask the cabin steward for 2 nice wine glasses. They have always complied.
Enjoy the cruise.
Richard & Mary
NCL Platinum Lattitudes members.