My mother-in-law's married son-in-law doesn't need a follower.

By followers, I mean people outside my family. You are my uncle, and my family doesn't talk about followers.

A grandparents' wedding is two floors away, so it is ok to cheer.

Those who are less polite than the previous generation cannot surpass them and are not qualified to accompany them.

You can refer to other similar relationships according to your own conditions. Even if you express it, you can do what you can. Without standards, you can save face.