It's always the kitchen for me across food places (in Australia). Ending up with pickles when I removed them. Ending up with coke zero instead of coke. But the worst is ending up with anything mock meat!
McDonalds once forgot to actually put the patty on my burger. No idea how they managed to do that.
McDonalds once forgot to actually put the patty on my burger. No idea how they managed to do that.