While I have yet to try the Falls Church location, I renectly had the chance to dine at the National Harbor Elevation Burger. While I was pleased that the fries were gluten-free, I was disappointed otherwise. While the rest of my family, including my gluten-free son, enjoyed the burgers, I couldn’t because I also can’t eat beef. When I asked whether or not their veggie burgers were gluten-free, the staff had no idea, and could not be bothered to look into it, merely responded, I probably wouldn’t eat it. I got the same response for their milkshakes. Thus, this gluten-free mama went away with just a few fries in her belly. Sorry to say we won’t be back.