I almost titled this "Free Rum" but that seemed somehow cheap (although that was how I titled an email I sent to a few friends earlier).
Anyways, to keep this brief - the South Street Seaport has free Friday programs on the 3rd Friday of every month - tonight's is an author reading & rum tasting. Plus they're also offering plenty of the kind of spirits you DON'T drink - they have a carolling tree featuring the Big Apple Chorus, and a candlemaking workshop with hot cider, and an exhibit of children's toys. Sounds like fun!
More details at the South Street Seaport Museum website.