I am a mother of six but I get it. My sister is childless, not through choice, and if I couldnt do anything with her because of the kids I would always try to have a Plan B "I cant do X date as its the nativity that day, but any other day is fine". She understood and we worked out how to make it work.
I have friends without kids who have had this sort of treatment so I do get it.
https://inews.co.uk/opinion/64-childfree-parent-friends-lives-important-4398708?utm_source=firefox-newtab-en-gb