I will try to keep this long story short. FMIL wants to invite everyone that was invited to FI's brother's wedding. We don't have room for that many people. We need our guest list to be about 240 (max for the room) and right now we are at 280. She is asking us to see if we can reseve the bigger room at the reception hall instead. For this room, we need to guarantee 250. FI and I don't want this many people at the wedding. We would prefer a more intimate wedding but we have big families (all of whom will be able to fit in the smaller room).
Side note: FMIL can be very stubborn and doesn't back down easily. She has been wanting us to do everything almost exactly like FI's brother did.
Any thoughts are greatly appreciated!