The Metropolitan Transportation Authority (MTA) is the mass transit agency that operates the Long Island Rail Road. If you are looking to avoid a car rental, the wedding hotel is accessible by mass transit. Take the Ronkonkoma branch to the Ronkonkoma station for the Hyatt.
If you go car-less, we advise you to hitch a ride or Uber to the church on the day of the wedding, as there is no shuttle service to the church. Transportation will be available to and from the reception.