Re: Is there such a thing as a nice way to...
Oooh I would be mad. My sister-in-law has told her kids exactly what is okay and not okay to eat, and she puts it on them to follow the rules. When she drops them off with grandparents she has them repeat (in front of everyone) the rules for food. She also jokingly tells them that grandma and grandpa might forget so it's up to the kids to keep them in line. The kids know they may get punished if they accept sweets that they know are not allowed. If the grandparents offer sweets the kids sometimes turn them in to mom.
Happy atheist in a home full of love