I've posted before about my mom pushing for some OOT guests to be invited to the RD, and how I handled it. FI and I were adamant that it was to be immediate family and bridal party only at the RD. The restaurant's private room our RD is at fits a max of 30 people. Total invited and attending that meet the RD criteria- 23, including us.
FI wakes me up at 1 am when he comes to bed, can't sleep and starts talking/asking questions. He then tells me he thinks we should invite his friend who's driving up from S.Fla to the RD. I say no, he keeps pushing, saying how we have room. I remind him of our agreement- he's still saying how this friend is driving up from S. Fla. I finally sat up and said "Damnit, FI, it is 1 am, I need to sleep due to work tomorrow, we already agreed to limit the RD- if we invite him, etiquette says we invite all OOT guests. Our room will not hold that many people, (since we picked it after we agreed on the limitations), and I DON'T HAVE TIME FOR THIS."
This morning, when I brought it up, I reminded him how annoyed he was my mom wanted us to invite some OOT friends on my parent's side, and how this is the same principle. I told him for us not to be jerks, we needed to either stick to our plan, or invite all. We couldn't exclude one or the other- the way my brother did with his RD. He again tried to bring up that we had additional seats in the room max- I said that just because we had empty seats we didnt have to fill them. I told him if he wants to push this, we'll talk this evening after work, but he will get the joy of calculating what we can afford, finding a location, etc, less than 5 weeks out, AND resend RD invites. To EVERYONE. When I reminded him of the work that would have to go into redoing that, on top of the other things I'm handling, he seemed to start reconsidering.
I love him dearly, but he doesn't always think his ideas through. But it's good that we're talking about these things, good communication work for married life.