I came in for a burger today after a long day at work. I accidentally forgot to tell them I needed gluten free. The tall male cashier looked upset and the girl that cooked it said it was okay she could make it again. Then I caught her talking about it with the cashier, basically complaining, and she got quiet when she realized I was standing right there. I left a generous tip and was polite. I don’t see why it was such a hassle for them to do what they’re paid to do, and why the anger. There were only 2 people inside, so it’s not as if they were slammed. In the future, if a customer forgets to tell you an allergy, don’t be impolite.