My mother's side of the family was from the Midwest.
Super polite, agreeable, but almost impossible to nail down with clear communication as to how they felt or what they wanted.
During reunions with that family, it was nearly impossible to get them to say where they wanted to go out to eat.
If you clearly state what you want you end up taking responsibility for that. Say you want to go to X which is a 40 minute drive away and when you get there it is full. Then you will here "Well, you wanted to go here!" and it will be your fault.
> it was nearly impossible to get them to say where they wanted to go out to eat.
Some people just don't care, like me, and can find something to eat just about anywhere. I also dislike choosing where to eat, so my rule is that the pickiest eater gets to choose, and I'm never the pickiest in a group.