I would say the parking is the biggest probably with Long Island. Their is NO place to park. If you can park at the stores or find a secret place to park that ok. No rest area, their is not a single place to park but the customers.
The traffic is mess all the way from NJ to Long island once you hit the GWB. I hope you have EZ Pass for the toll Bridges. The GWB is something like $100(but free on the way out). It probably $180 in tolls to get out to Long Island.