I will give plenty of examples what are not "extreme" but are very common
I see them everyday in this board.
One or a combination can break the trust and relationship with your AC.
1. Disregarding allergies, dietary preferences, grandparents feed the child what they want vs what the parents gave them
2. The "right of a gp to spoil" via candy, treats, toys, etc. If the parents have told you to stop, pay attention to them
3. The request of spending time with the kids without the parents.
If the parents say yes, ok. If not and a gp complains about it, it becomes suspicious why
4. Safety: cat seats is a huge one.
GP wanting to drive the gc around and the parent denies it.
GP wants to take baby to visit friends or family parents don't know/don't like
GP following out of date safety measures but insisting child is ok in their care
5. Babysitting/caring from child: if your son/dil want to take their child to a daycare instead of accepting your offer, let it go
6. Babycare: GP disregarding parents' instructions for the child as gp "already had children and knows what to do"
7. Fighting over the parents' and gc's time: GP is unhappy about the number of visits/calls/number of times gp sees the grandchild
GP unhappy about the distribution of holidays with them vs ILs - how much time maternal side gets vs paternal side
Xmas, birthdays, special occasions - gp expecting their AC and gc to "come home"
Gp being retired means you have all the time in world. Your AC is in opposite side, he/she is extremely busy
8. Gp's "advice": if it is not requested, don't say anything. It is not walking on eggshells, it is respecting the parents autonomy and chosen parameters to take care of their child
Suggesting rice cereal in the bottle so the baby sleeps the whole night, breastfeeding is not enough for the baby and needs formula, asking the mother to pump so gp can feed baby, etc is NOT going to sit well.
9. Saying " that is how I raised you and you came out ok" is not a justifiable reason for you to get away with the "misunderstandings or miscommunication"
10. GP requesting a gc - even as a joke, it is not funny.
Example: "so, when are you going to have a child?"
"When are you going to make me a grandmother"
"I am not getting any younger, I want to see my grandkids grow up"
11. As soon as babies are born, stop caring to visit your ac and concentrating 100% on the baby
13. GP not having a relationship with dil but as soon as she is pregnant, MIL wants to become close
14. Gp saying that they are ok not visiting theit ac, but all they want is to see their gc
15. Gp blaming the spouse instead of also realizing their child agrees with the wife/husband
Example: dil does not let me see my gc
16. Expectations of visits after baby is born
Yes, it is exciting. No, you won't be able to visit several times a week or spend all weekend with your ac and grandchild.
Same goes for not having an open door policy and able to pop in whenever
17. Birth is a private matter. You do not have the right to see your gc being born
18. Presents with strings attached - Example- I buy cloths for my gc but I do not see my gc wearing them.
19. Presents as weapons- I do not approve of what toys you buy for your child so I am teaching you how to do it best
20. Expecting dil to be the social secretary when she does not want to be
21. Expecting your AC and spouses to do what you did when you were the young couple and how you dealt with your ILs