Do I need to rent a car, if I am going to Harbour Island?
No. Not unless you want to dour the rest of the island. When you arrive at North Eleuthera Airport, you can take about a 5 dollar cab ride to the docks, and take a 5 dollar water taxi to the middle of Dunsmore Town. Once there, you can either rent a golf cart there, or from Johnson’s on Princess Street. Or your hotel may have one for you, so check with them before renting one.