Good morning, Eric~
The SSWA Duckboat Show & Waterfowl Festival is a small fraction of Tuckerton - basically a product of location. Just as tidewater Jersey has many times the saltmarsh as does LI, so, too, does it have many times the gunning population. I am guessing it is a tenth of Tuckerton.
Another key difference is administration. The SSWA show is strictly volunteer. Although it takes place on Town of Babylon property, the Toewn plays no other role. The Tuckerton show, on the other hand, is run - very ably and enthusiastically - by Ocean County staff. I know spend many months each year in preparation.
There is a handful of commercial vendors at Cedar Beach - but I am always too busy otherwise - and, of course, I rarely buy anything new.... There are perhaps a dozen tables that sell old decoys and gear - more up my alley.
BTW: The forecast is for 100 % rain all day Sunday, with a southeast breeze.
All the best,
SJS