If you're too tipsy to drive after sampling their wares, I can't imagine them sending you out on the road. Unless they have accommodations (Inn? B&B?) as well, then they might expect you to rent a room.
If you know which ones you might want to visit, you could probably email them and ask. Tell them you're
planning a winery tour through NYS, and have a small van conversion RV that parks like a car.
That way there's no confusion.
Or contact the New York State Tourism Site.
They might be able to answer the question.