Despite what your mapping system may say, Fire Island is not accessible by car. You can only get here via the ferry from Bayshore to Ocean Bay Park.
If traveling by train, take the LIRR to the Bayshore stop. Trains transfer at either Jamaica or Babylon. For more information about fares and schedules, please visit http://lirr42.mta.info. There is a van service to the ferries which meets each train for $5. per person. No call necessary.
David Brothers Taxi offers a shuttle bus to and from Manhattan during peak season for $27 Monday-Saturday and $30 on Sundays & holidays each way. More information about the service can be found at https://www.davidbroscarservice.com/home_page.
Be sure to take the ferry to OCEAN BAY PARK. Please refer to http://www.fireislandferries.com for all information pertaining to the ferries. This website will have schedule information, driving directions and parking information. The Ocean Bay Park ferry, located at the end of Maple Avenue, departs from Bayshore, NY. On holiday weekends, leave plenty of lead time for traffic and parking.
The ferry usually makes 2 stops, first at Seaview and then Ocean Bay Park. When you exit the ferry go straight to Bayview Walk, make a left and The Seashore Condo Hotel is about 200 feet down on your right.