Our RSVP deadline was one week ago & we still have quite a list of people that haven't responded. I split up the list for my family, friends of my FH, & family & friends from FH's side to give to his mom. Me, my mom & dad handled our side, FH handled his, but FH's mom is unwilling to talk to any of the 23 couples she needs to.
I feel very frustrated because we were very flexible with our guest list (no restrictions) & she added people continuously & I had to accommodate (we ran out of invites at one point & had to order more).
Part of her unwillingness is that she does not agree with doing a seating chart. That's fine, but we are doing one & that is that. She does not understand that I need definite answers from these people. 23 couples can alter our catering plans & seating plans significantly. Her response was that maybe 10-15% out of those remaining 23 couples will make it. I think we all know that people may end up coming when you think they won't.