Not sure if programs will happen during Covid, but if so, they are usually great!!!
Apples may not be in season, but they have other fruits and fruit products for sale, along with a variety of products and food for sale. (Owned by Mike's high school Home Ec [that was the title back in the day] teacher!)
Madeline Island is its own city and has all amenities within walking distance of the boat landing. You could also take a car across or a bike (or rent a bike there) to see a larger portion of the island.