I have always asked whether the child can have whatever it is. I am even more aware of it now after having had a child with severe lactose intolerance. I have got a food allergy bracelet for her which does help, and in kids church she wears a food allergy sticker with dairy written on it. Most people are becoming more aware in the circles I am in of allergies and making sure that nothing is given to the kids without their parents approval. Fruit has been put out for coffee time after church recently because it can be hard to find dairy and gluten free products.