Not a ATAT but interested as I saw a similar thread and I have a slightly different situation and wondered what people thought about it.
My partner and I will be marrying later this year. She has her ex-husbands surname, as do her children. I'm not attached to mine and have no children.
We were thinking that if I take their surname then it's easier in general. She is attached to hers and I'm not to mine.
I would like to have the same name as my wife, she would like to have the same name as her children.
There are things like passport control etc that are easier if we all have the same but that's a bit incidental.
I think her ex will possibly have an issue with this but don't actually know.
Thoughts?