Some of their items are marked gluten free on the menu, but a large chunk that isn't inherently gluten free, including most sushi, can be prepared that way too, just talk to your server. Also have gluten free soy sauce available though you have to ask for it.
Avoid bread and anything fried or crunchy, as long as the kitchen knows you have a gluten sensitivity you should feel fine, I did after my meal. Food was really good, but a tad bit on the pricy side.
— Very
— Gluten-free items are marked on the main menu
— Most/All
— Excellent