Unwritten secret: one Netflix account, several different homes with multiple devices, even in different cities. Netflix doesn't care to track an account even though being used on several different IP addresses. Meaning it can be shared with family members living in different homes. Someday they might crack down on this, for now they don't.
Netflix allows up to 5 devices on one account, but only 2 can be logged in at the same time.
I think there is a more expensive account that allows more....