Last minute items

[C cruzer]

I know this topic has a life of its own but...What if I didnt want to do rum runners from home, do they have duty free shops @ the airport in Miami where I could pick up some libations to pack in my suitcsae before the cruise? Or is there a good quick stop we could make on the way to the port? I would pack it in the center so that we wouldnt have to worry about the porters mishandeling;) Any info would be great, Thanks