time baby is in hospital nursery

I have a question about the amount of time the baby spends out of mom's hospital room and in the nursery. it's kind of a 2 part question because my mother in law was talking about how she's getting cold cuts to serve as food in the waiting room for whoever comes to look at the baby in the nursery through the window.... A. why is anyone coming while I'm in the hospital. (my culture you give people space to recover and adjust and if you're not immediate family you can come over to the house in a week or two to see the baby. you don't intrude during such a vulnerable time)...B. how long is the baby really going to be in that room?..(everything I've heard is baby stays with mom in the room the whole hospital stay). . . .... any varying info or perspective is appreciated

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