BYOB on Board?

[LilliputLady]

Is it possible to bring, say a special bottle of wine or two, onto the cruise ship with you?

[Ron Clark]

Yes, if you inform NCL prior to arriving of your plans. They will probably charge $15 per bottle corkage fees.
Otherwise, bringing your own alcohol is greatly discouraged, NCL will confiscate all your alcohol and will not give it back until the end of the cruise.

[happycat]

You may also call NCL and ask to have a bar set up in your cabin. I believe the charge per bottle is $55.00 on the Star, but request it in advance, as ordering it when you are sailing will be more expensive.