Wait staff is fairly knowledgeable about gluten free options, but not always about contamination. They can make the burgers with a lettuce wraps and tacos can be made on corn tortillas. They only have one fryer and use it for things with gluten, so it's not free from contamination. Wonderful food!
Known for their Navajo tacos (think fried bread/American scone) which is obviously not an option for me. They do have great hamburgers which are normally served on flat bread. I get it without a bun and it is good. They put enough toppings on it and season the meat that it keeps me happy (and I'm a bit picky). They have awesome corn on the cob since the fries aren't an option. Try their pear cactus lemonade.