Sorry I wasn’t clear. Most of them are seasonal. Some close as early as Labor Day and some stay open through early October. Some reopen in April and some in May.
The ones that stay open after Labor Day usually are only open on weekends, most of their staff are college kids who return to school.
They are season because most have outdoor seating only. You walk up to a counter and order, then take your food to what is usually a picnic table, sometimes outdoor table and chairs. It would be to cold on the water to keep them open through the winter.
If you are in the area I can make recommendations depending on what you would like.