You have to call ahead and you have to have a group of 8 or more but if you do call ahead and have a group of 8 or more they will cook your hibachi style food in front of you just like normal.
I would not recommend going without calling ahead and if you don't have a party of 8 they cook your food in the back and my celiac friend said the food from the back is horrible.
You can't have hibachi. They have a few sushi without crab, real, or other GF no-nos. yes they do have GF soy, but no GF teriyaki or ponzu sauce, and 90% of the rolls have fake grab or eel so very little selection if you are hardcore zero gluten. The noodle house that is part of them can make GF pad Thai and their rice bowls and that's about it. For the price not worth the visit.
They make gluten free dishes in the kitchen with gf soy sauce. Tasted great!
I've eaten GF here once. It was around 2010 so maybe they're better now, but the best they could do was make me something in the back without soy sauce. It was dry, tasteless and expensive. Plus, they really didn't understand what GF meant.