@gigi32, you ask " Just wondering how others have handled after transplant with their grandchildren?"

I hope you saw the helpful post from @vstates66 regarding how to manage your husband's being immunocompromised and still seeing and interacting with your grandchildren. That is certanly a known situation for which you can plan. I like the staggered approach over time that worked for @vstates66 and family.

I found this article about talking to children about upcoming transplant. It is related to bone marrow transplant, but easily transferrable to organ transplant too.
- Preparing Family and Friends: Helping children cope: https://bmtinfonet.org/transplant-article/preparing-family-and-friends

@gigi32, is Gigi what your grandchildren call you? Are the grandkids aware of your husband's upcoming transplant?