Often the things parents don't want us to do is because they want to do it like no TV at daycare so my kid can watch 2 hours in the evening and give parent a break or no sugar or juice so the parent comes off as the good guy and gives juice and timbits as a treat as soon as the child gets in the door. I more or less ignore parents and do my own thing. Awful I know but unless there is a valid medical reason/allergy then they get what everyone else gets. Too often parents are jumping on this or that bandwagon of popular belief and not thinking things through at all so that becomes a factor too.