The chef came to the counter and confirmed our allergies (just gluten). The gf bun isn't going to win any awards, but it was fine. All the French fry dipping sauces were gf and the fries were tasty.
Our burgers were brought to our table in the paper to-go bags instead of on a try like I saw everyone else getting, so I guess that's their allergy designation.
Not the most amazing meal ever, but a good/safe hamburger and fries.