The Island of Puerto Rico is part of the United States and American citizens do not need a passport to visit Puerto Rico. Puerto Ricans serve in the US Military and we use the same US Postal Service and also use the US dollar.
You will need a rental car and you should reserve your car in advance. The rental company will pick you up just outside the baggage claim area, at the San Juan airport (SJU). Be sure you have their telephone number handy, should there be a change in flight times, etc. You should confirm their operating hours, as not all car rental agencies are open 24 hours a day. A taxi service is available but the trip from the airport to the hotel is very expensive. Without a rental car you would spend approximately $150 to visit the El Yunque rainforest, however with a rental car of your own, it is free. There is no charge for our secure, gated parking at the Inn. Please be advised, there is no public transportation after you leave the San Juan metro area.
Luquillo Sunrise Beach Inn is a 45 minute drive east of the airport, in the small town of Luquillo, located just off Hwy #3. As you exit your car rental agency, head South on Hwy #26. Stay in the left lane as it ends. Follow the lane that turns into Route # 66 ( a toll road, you should turn the automatic toll payment on when you pick up the car, you cannot pay cash on the toll roads) You stay on road #66 until it comes to an end and feeds into Hwy #3, a more local road.
Once you are on #3 drive East about 15 minutes. Pass signs to the El Yunque National Rainforest. Just after your first glimpse of the ocean to your left, then a row of about 50 Kiosks, signs will say Luquillo. Turn left at the traffic light of Luquillo, Drive the short block which ends, then take the right... first or second left will take you to the ocean and a large metal modern sculpture. The Inn is the second building on the left once you reach the ocean.
Recommendations: At your first opportunity stop at a gas station and buy a proper road map. It will say Metro Data and will cost approximately $4. Please be advised, if you are driving a vehicle with GPS, or have your own, you will find it often does not help so you will need the Metro Data road map in addition to the GPS. FYI: the car rental agency maps are not very helpful.
See daytime, scenic, alternate route from airport below.