First, Congrats and Best of Luck!
Advice Wise... Just remember all the annoying things he does now won't change.
If he leaves his unders on the floor for Mama to pick up, he's gonna expect you to do it from here out... unless you educate him.
Not that yours does this, just an example. But that about drove me NUTS when we first married. DH's mom was the uber-housewife... so he didn't know how to so much as boil an egg when he moved out. N'mind how to operate the washer. Took years, but we got there.
Don't let the little things slide until the simmering boils over... talk about those little things before they become big. Hard part is being willing to discuss your own... lemme tell ya... if you want him to be open and willing to change then you have to be too. But, if you both think your marriage is worth fighting for then you'll battle it out, then kiss and make up. This also helps, being able to discuss the little pangs, when it comes time to deal with the big ones. You know each other well, have open communication, aren't afraid to speak up, etc. So when a larger problem comes along you can deal with it together.