Congratulations!! What a wonderful day.
Sleeping thru the night: One of my cousins had her parents say this about her when she was about 30 yo: "We're still waiting for her to sleep through the night."
(And it was true!)
It really depends on the baby. I've heard people say their baby slept through the night within a couple of weeks, mine was around 3 months. That is, apparently, pretty typical. Mind you at 3 months, "sleeping through the night" meant about 5 hours. Which was heaven after only about 2 hours.