Five guys has a fryer only for fries, and vanilla milkshakes have low to no risk of cross contamination as nothing needs to be mixed in. I enjoyed both of those without having a reaction, but decided to not get a burger as it didn’t look like they were cautious about cross contamination (at least while I was there). I know other locations are typically good about that, so take it with a grain of salt
— Somewhat
— No gluten-free information on the menu
— Not Much
— Excellent