^Not unless it has changed in the last few weeks. There are two Duty Frees in the Baggage Collection area after Immigration but before Customs and you can buy up to six 750ml bottles. The local Airlines will want you to store it in luggage but will allow a box if the Duty Free Shop give you one. It does mean you have to go through Red Goods to Declare Customs which adds a bit of time but doesn't affect your flight to the Cayes as they are shuttles not scheduled departures.