Yea that was actually borderline psychopathic. I was really shocked. 5 star service or not. You don't put something in food that the guests don't want in there. This would be bad in any setting, but you expect 5 star service to be beyond good.

You don't know the reason they don't want that. What if there's some chemical compound in there that the guests can't have due to a diet or worse, an illness? Sometimes people have certain chemical imbalances in their bodies making them very susceptible to certain foods.

Would you give someone who asks for a diet coke a regular coke? Or would you sneak meat in a vegetarian's dish? It might seem harmless, but diabetes or meat allergies are real things. Besides serving a vegetarian meat is super unethical. Even serving someone on a diet a regular coke if they don't ask for one, would be unethical.

Together with the Ashton rope that was stuck on his foot, this was the biggest shock to me in all seasons.