I want to express my appreciation both to the OP and to the respondents on this thread. OP’s query has opened up a lot of discussion that is throught-provoking.
I have both a son-in-law and a daughter-in-law. Both are wonderful people but different “types” than I am; they are both much more focused and driven. I am much more laid back. Interestingly, the people both our son and daughter married share some significant similarities and strengths. But in both cases our relationships go primarily through our own kids. It is rare, although appreciated, for our in-law family members to call us to chat. I would love that to happen more often but don’t want to push that agenda, especially as they are more time-pressed than I (currently retired) am. I am blessed to have good relationships with both co-mothers-in-law, and we have become good friends.
Anyhow, I have learned from this thread that we parents-in-law do need to focus on the “kid on the couch” and not our idealized or expected in law family members. When my son chose his wife he chose for himself, not so much for a new friend for me. And she is great for him! As long as they work well together and are happy, that is what matters most. I need to focus on that. Anything else for me is a bonus.
Re the wedding thank-yous, both our kids and their partners handled them the same way. The partner whose family or friend the gifter primarily was wrote the thank-you note, but both of them signed it.
We are grandparents through my daughter’s marriage, and I can say that it is clear that both our daughter and son-in-law encourage and are delighted with the relationship we have with our grandchildren and that has been very mutually rewarding,
NONE of these young adults, neither our kids nor their spouses, ever ask us for advice, and we have had to learn to work to refrain from offering unsolicited advice. That is my major frustration, LOL! The one exception so far has been with toilet training, when they wanted to know how it went when we were going through that with our own kids.
Anyhow, thanks @VeryHappy, for initiating this good discussion, and best wishes to you and all in your family!

