Planning for after leaving the hospital?

I'm 8 weeks shy of having my first baby and need some advise. At the hospital i plan to have my doula and my husband in the room. 

In the waiting room, i'm only inviting: 

1. my mom, dad, sister and brother

2. my husband's dad, his sister and his brother

Question: How to i make sure that the people WHO will be in the waiting area not tell anyone else? I know my family won't but i am particular about my husband's family won't invite anyone else. How do i tell them kindly not to?

Also, how to i make sure that only myself and my husband and my mom/dad goes home with our baby? How can i kindly tell everyone i want space? I don’t want to hurt anyone’s feelings.