Our dd is getting married this summer. My initial rule of thumb for invitations was - if I wouldn’t expect to be invited to their wedding (or their child’s wedding), I wouldn’t invite them to our daughter’s wedding.
I have 2 cousins who I have almost no contact with. There’s no animosity or anything, we just never developed a relationship. I don’t even know their phone numbers. Obviously dd doesn’t know them and they don’t know her.
I had not intended to invite them because if their kids were getting married, I would not expect to be invited. Dh thinks my mom might be offended if I don’t invite them.
Where do you draw the line?