From my experience, booking a private service is the most convenient option. I found useful details on https://ewlimo.com/luxury-transportation-jfk-to-hamptons-black-car-and-limo-services/ which explains available vehicles, pricing expectations, and how the process works. It helped me understand what to expect in terms of comfort and timing. Overall, a black car or limo service offers a smooth, stress-free ride, especially if you value reliability and a higher level of service.