I agree with what folks have said already: BOUNDARIES!
My MILs wanted to be there, and I said ABSOLUTELY NOT. The only person in the world I completely trusted was my DH, and that was the only person besides midwives and doula that I wanted involved in the birth.
I was very cagey the whole time about actually revealing my due date, to avoid pressures around that, and didn't let anyone schedule a visit until two weeks after the due date, since I had to give SOMETHING for those travelling by air. I both wanted time to bond and figure out our routines AND really didn't want a ton of people handling my newborn and getting their cooties all over her.
I would not allow anyone to stay in the house in the first month or so. Even though we normally have the MILs stay with us, we made it very clear that when they came to visit this time they would have to find somewhere else to stay. Our argument was that they would be here to help us, and the worst choice would be to have EVERYONE exhausted by being woken up all night by a baby. The TRUTH was that I didn't want an audience in the middle of the night, but who needs to know that.

Once visitors did get here, we had to really have them understand that we were not up for social activities and that we might have to have them simply come over for a couple of hours, help us shop/cook/clean a bit, and then leave us alone again. Fortunately the MILs were very accomodating to this. My mom chose not to come at all.
This time, we'll be needing help in the first month to support us being able to have the bonding/regulating time with the newborn but still care for our older daughter. Fortunately we have SIL/BIL down the street from us who we can have "on call" for the birth as child care, and then we'll get the grandmas in on a rotating schedule to help us. Things will have to be different, but I still will be pooping on my own foot in front of no family but my husband. He's so lucky.
