Prepare for Your Future Together
(I think going to a marriage counsellor before you get married would be an excellent idea.) Learn how to laugh together.....learn how to laugh together...and finally...learn to laugh together.
Pre-Marital counseling, get them mad so you know what that looks like, some say live with them...(which might not be a bad idea these days, that way you know what you are getting yourself into)
Discuss what you want from the marriage, as well as goals and the importance of children.