In brief: I'm a coeliac. Husband ordered 2 lots of Egg Benedict, one standard, one gluten free. One came first and I asked if it was GF and was assured it was. I ate it, nice round bun and good!
Half hour later the other order came, stone cold and the bread looked like typical GF. I asked another wait staff if it was the GF bread and said it was.
Husband asked to see management. Management declined and from a distance we saw was smirking! Sent wait staff back to tell us someone from the kitchen would see us. We waited a while but gave up and left.