Google Blue Heron and ask that question

I don't believe they offer a gluten free menu. I would recommend calling before going.

To confirm hours call the restaurant hours are not online

Only certain times

They do not have a gluten free menu, but the chef will absolutely accommodate your needs.

I am not sure if they take reservations on fish fry Friday. But it is a very good idea to call just in case as it does get very busy Fridays.