I didn’t get sick, but despite ordering a GF bun on my burger and stressing that I needed to be gluten-free, I was served my burger on a pile of unsafe French Fries. The waiter then walked away, forcing me to flag her down to confirm that I could not, in fact, eat those.
I ate the burger anyway, and they brought me a side of broccoli on the house, but it was definitely a stressful experience.
If you keep walking down the gates of Concourse C, there’s a Shake Shack that has (as of this writing) fewer, but better reviews.