I can regretfully inform you that most all of the northeast megopolis is now a police state. Usually, they be mollified by using advance notice to both the local establishment and your neighbors. Tell both that you want to do a day and night in the TT before you go anyplace. Most will not object. This is the best way to get to know how things work. If you run into resistance, then circle around until you find someplace that you can camp. Boat yards are pretty good bet. (I happen to know that there are a few on LI.) It does not have to be a "campground".
Have a good time getting off the island.
Matt - a refugee from the megopolis.
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.