This legendary restaurant is incredibly accommodating to GF customers. We ate in the upstairs cafe, and the server was extremely knowledgeable about everything on the menu and what could be altered. They were quick to offer me a specially made off-the-menu dish that was GF and vegetarian (and delicious!). My celiac daughter vacuumed up every bite of her halibut. This is a true destination meal, so make a reservation and treat yourself!