1. The parents could try a healthy carrot cake
2. Well it depends how old the child is. If he or she is 4 or under than yes but above that age its the friends and the activities that they do.
3. Fun party games where everybody is included, Or If the child has a device then let the child have some electronic time or if he or she wants to just relax then let them relax.
4. there aren't any policies just make sure there are only parties when celebrating something.