I think we are in a society with more and more intolerances and allergies. All food must be well labeled and marked with its list of ingredients and components.
At a wedding that I went to, there were several people with intolerances, including a celiac. He could not enjoy some dishes because no one informed him that those dishes did not contain gluten and that he could eat them. Imagine in the case that he had eaten a food that contains gluten and nobody informed him…
To prevent, we must inform, so we can guarantee a good service and a better customer experience! 🙂