It will be one night with the five adults, my friends ( a couple) will take the sofa bed, my mom baby and I the queen bed and my husband has volunteered to take the air mattress.
While it will be tight for one night, it will only be my mother, the baby, husband and I for the remainder of the trip. My sister may " pop" in for two nights, but she would be fine sharing with mom if she did. And she is not confirmed, nor will she until probably three weeks before the trip, so she can't be planned around.
To clarify- for rental on points they allow FIVE ADULTS PLUS THE BABY, BUT YOU MUST BRING THE LINENS AND TOWELS FOR THE FIFTH, AND OF COURSE AIR MATTRESS.
ON A FUNNY NOTE, ONE CAST MEMBER SUGGESTED TO ME TO USE THE PILLOWS FROM THE BACK OF THE COUCH IN A TWON SHEET AS THE FIFTH SLEEPING ACCOMIDATION......