The CBP says you can bring back two liters of alcohol duty free from islands that compose the Caribbean Basin Initiative, which include St. Lucia, the Bahamas and Aruba, as long as one bottle was locally produced.

Yes, you can bring alcohol back from the Bahamas, but you must adhere to the strict "Duty-Free" limits set by your home country to avoid paying extra taxes. For U.S. residents (aged 21 or older), the standard allowance is one liter of alcohol per person, tax-free. However, because the Bahamas is part of the Caribbean Basin Initiative, you can often bring back an additional liter of alcohol, provided at least one of those liters was produced in a Caribbean country (like local Bahamian rum). If you exceed this limit, you must declare it on your customs form; while you will technically owe an excise tax, the amount is often quite small (a few dollars per bottle), and customs officers sometimes waive it for small overages. When packing, remember that if you are flying, you cannot carry full-sized bottles of alcohol through airport security; they must be in your checked luggage and should be padded securely to prevent breakage. If you buy alcohol at a "Duty-Free" shop inside the airport after you have cleared security, you can carry it onto the plane, but if you have a connecting flight in the U.S., you will need to place those bottles in your checked bag after you clear customs at your first point of entry.