Precisely one set of cousins had responded at all, and they declined. (They are tricky to read. On the one hand, they had just seen my mom. On the other, they have 3 small children and live 3 states away and they left a nice note.)
No one else has responded.
I'm going to give them the benefit of the doubt, and reach out to them to ask if they are coming. I am fairly certain they will say no.
This will leave me with my father, my stepmother, and my father's frat brother and his wife as the only family at the wedding. So, really, the only blood relative there will be my dad.
At a certain point, this just hurts. It hurts a lot. I'm an only child, the cousins I grew up with are the ones on my mom's side (my father's side is .... well, there's a lot of addiction and pain over there, so it's a mess), so they are the closest things to siblings I have.
Taking a big view, I'm not surprised. When my parents divorced, mom's side all but kicked me out. (I was 16.) Some of them reached out to me, but given that my relationship with my mother was even more volatile, then, most of them chose her, because I chose to live with dad. (...Again, I was 16.)
I've tried so hard to stay connected with them. I've babysat their kids, I've made things for their kids, sent them things, visited them if I was anywhere accessible... and they are all letting the wording of the invitation be their excuse not to come.
FFIL says you marry a family. I warned him that was maybe not a great thing to say, because he shouldn't trust my family. I hate being right.