Called the facility when we were there on vacation before we got to the restaurant (thankfully). There is NO dedicated gluten free space and they are a sandwich shop and said they only offer GF bread, they try to take every precaution they can to make the prep GF but don't guarantee it will be GF.
What a treasure Poseidon's is! Stopped for lunch...a difficult decision since all deli sandwiches can be made on gf bread! I had the ham and brie on panini, so delicious! Did a little shopping in the gourmet grocery area (again, many gf choices) while we waited. Enjoyed our lunch (including a gf brownie!) on the porch! Wish I had such a gem a little closer to home!
This place is a foodie paradise and I felt very safe eating there! Gluten free hard ciders (many of which were new to me!), homemade gf brownies, lots of snacks, fresh cheese...and all sandwiches can be made on gf bread. Two thumbs up! I had the adult grilled cheese with tomato and wished I ordered two once i was finished!