I'm assuming you mean pre-marital advice in general...
I've become a firm believer in counseling at various stages in our lives, no matter how well rounded we might think we are. Whenever we get ready to enter a new phase of our lives, it's important to stop and take stock to make sure we're as ready as we think we are.
I'm talking about actual counseling with a professional therapist, such as a marriage counselor or other type therapist and not just one or two sessions, but real, true counseling.
Marriage is one of those times when we're making a huge change and it's so important to make sure both parties are ready for such a step. It's important to know that both parties are on the same page as far as careers, schooling, families, finances, and so many other things. All too often some of these things aren't taken into consideration before the marriage and the couple finds out later that they really don't have the same visions, personalities don't really match, etc.
I know people/things can change over time but IMO, this would help reduce divorce rates considerably. I know counseling sounds drastic but I don't think people take mental health seriously enough and I also don't think people know, either themselves or their potential partner well enough before they make a lifetime commitment.
Do you mean, getting married? Or literally going to a wedding chapel versus a different kind of wedding?