There is a campground on the beach in Lido Beach, NY at Nickerson Beach. They have full hookups and some dry camping in the overflow. You have access to the pool in the cabana area and the beautiful beach. A 10 minute ride and you are in the City of Long Beach where you can take a 40 minute Long Island Railroad trip right into Pen Station in NYC. For any off days there are plenty of restaurants and bars in Long Beach as well as a 2.5 mile long boardwalk.
Here is a link to the parks website... https://www.nassaucountyny.gov/2802/...son-Beach-Park