Let me start from the beginning. There is going to be a family reunion in Disney World this spring for DH's whole family. We have a time share there that has 2 bedrooms and a living room and we were able to arrange to use some of our time during the reunion, it is 6 nights, 7 days.
MIL and FIL asked if they could stay with us, knowing about our time share. Of the rooms, there is a master bedroom with a king size bed and a full size pull out couch. There is a living room with a full size fold out couch and then there is a second bedroom with two full size beds. There is 2 bathrooms and a small kitchen so with 2 people per bed that's 10 people plus we will have our baby's pack and play for her to sleep in.
So we figured we could give MIL and FIL the king bed in the master bedroom (they are bigger then me and DH and would not be comfortable sharing a full size bed) and our 4 and 9 year old sons would sleep on the fold out couch in the master bedroom. Our 17 year old DD and her friend who lives with us (her parents are military and were stationed in Germany and agreed to let her stay with us so that she could stay in high school) will sleep on the fold out couch. That leaves our 6 and 13 year old girls in one bed in the second bedroom and me and DH in the other with our 7 month on in the portable pack and play.
This should be very comfortable, maybe a little tight with the bathrooms. But then MIL mentioned that SIL and BIL and their 7 and 3 year old could not afford a hotel so SHE invited them to stay with us too. I asked where she thought they would sleep and she said "we will make it work" I told her no, we are already maxed out on beds and 11 people including 3 teen girls and 2 women sharing 2 bathrooms. There is no room for air mattresses when the couches are folded out and when we have the pack and play up.
I am so mad at MIL that after we were nice enough to let them stay with us, she felt the need to overcrowd us with 4 more people without even asking. I told her that she will need to tell them that they can't stay with us. That's they way she is though, give her an inch, she will take a mile