We will be visiting the Hamptons in early September after a weekend stay in New York City. We don't want to rent a car in Manhattan and drive down but thought we would take the jitney to somewhere in the Hamptons and then pick up a rental car. We have also rented a place in Montauk and would like to spend a few days exploring enroute. Any suggestions where a car could be picked up? Seems to be quite difficult to find car rental location on Long Island.