No international driver's license required. Taxis are expensive, compared to renting a car. No uber on island. Everyone has their favorite with regard to car rental companies. Just be aware that different companies include different things in their pricing. Don't get caught up with a company that says the price is "X" per week, and then they add this for taxes, insurance, other charges, etc. Ask for a quote, all in, with taxes and insurance, everything, and then compare those prices.