I've had great experiences at this location of Shake Shack. They have a gluten-free bun, and they will activate an allergy protocol to prepare your burger. I make sure to order at the register with a real person at the counter (not one of the self checkout computers at the entrance) so I can explain what I need and ask questions. They have been very helpful and knowledgeable.
The fryer is shared, so I haven't gotten fries. And the Shacksauce has both spices and natural flavors, with no indication of gluten-free or not, so I skip that and just use ketchup. They have an allergen list online, so I double check that to be sure.
I loved Shake Shack before diagnosis, and it's delightful to still get to enjoy it!
— Somewhat
— No gluten-free information on the menu
— Some
— Excellent