Candyht:
I also live about 10 minutes from the airport. I am an Islip resident so I get to use resident parking. We love flying out of Islip. No airport limo to take us to the airport. Just drive the car over, park it and walk in. On the way home, pick up the luggage and we are home within 1/2 hour of the plane landing.
I have used Southwest, but, prefer Delta as I like to have assigned seating. With Southwest, you have to get there early, wait on a line to get a # and then go on another line to go in as the #'s are called. They allow families with children to board ahead. However, I am probably going to use Southwest in March as Delta's flight schedule is not convenient for me.
If you have any more questions, just let me know. I generally fly out of there 2x a year. We avoid going to Kennedy or LaGuardia so much that for our trip to Ca. in September, we are taking a flight out that makes 2 stops on the way.