So. We've been married now for 2 1/2 months, and I get this question a TON! Also, "So, when are you gonna have babies?" (I'm looking at you, mom!)
The answer is: It's exactly the same and completely different at the same time.
We of course, lived together for roughly 4 years before getting married. We definitely skipped over the part where we learn what it's like to share the bathroom, divide up all the chores, and learn how to cook. Obviously I am still learning the cooking part. :) But as for the rest, we've had it down pat.
The other stuff, like seeing the look on his face when he saw my new name on my driver's license, isn't so obvious, but it's my favorite stuff. Like, when he calls me "wife," or "mrs. vera," I melt. That's the completely different stuff. It's more of a feeling inside than anything. It's knowing we are on the same team in a serious way. I think it's translated into the two of us being nicer to each other. It's not like we never argue or have a stressful moment, but when we DO argue, it feels like a more considerate argument.
Otherwise, the bathroom's still my chore and he still has to mow the lawn every sunny Friday afternoon. :)
PS--the answer to the baby question is, absolutely not yet! :)