They have gluten free cones available. The allergens are posted on the inside wall now so you can check things out before getting in line. They offered to wash hands and get a clean scoop when I asked about gluten free cones.
We recently spent a week on the Maine coast for a family vacation, and as soon as we found the Scoop Deck, we knew we had to come back. In fact, my whole family made a nightly ritual of going for the entire week. We tried so many flavors of their delicious, homemade ice cream. The staff was very helpful, they have an allergy book behind the counter that you can ask to look at, and if you tell them you have an allergy, they do a clean scoop. I just got my ice cream in cups, but they did offer gluten free cones, as well, which I found very impressive. Great, fun atmosphere, a large lawn area in the back with picnic tables, and great choices!