I haven't been to a church that actually taught me anything for a long time. Not just in marriage, but in anything. They just seem to find a passage in the bible and waffle. It always eventually gets back to how much Jesus loves us, and that's about it. I know Jesus loves me, I wouldn't be in church otherwise, I don't need to know that.
There are things that churches NEVER teach on. Well, that's not entirely true, Samuel preached them in the church we were going to before we were kicked out.... Marriage, sex, circumcision, for examples. Things that you actually need information on to make decisions in your life.
We've never been to a Christian marriage seminar, but we went to a pre marriage course. There were 4 couples plus the married couple leading it, and all were surprised at how traditional Samuel and I were. It was natural for us, but we were also trying to hold to scripture for how marriage is supposed to be. At the time I just thought it was funny that no one else was doing things the way we were, but now I look back and think that it's a very sad thing. In all honesty, I'm not sure how much that course actually taught us about married life at all, especially since it was a blanket thing based on anyone who thought anything.
There are many churches like that in America too. It kind of depends which faith stream you're looking at. The old mainline denominations vary from motivational talks to outright social justice craziness. But amoung the conservative evangelical groups there is still a lot of in depth Bible teaching; problem is they interpret all of it according to the philosophies of the world.