A therapist for couples/relationships says that Joachim and Marie haven't lived yet together, they don't really know each other well in their daily routine and Marie is literally buying the cat in the sack. She might be up to some unpleasant surprises e.g. finding out that life in Schackenborg isn't her thing.
I personally agree, I think the engagement came too early. Marie should have moved to Denmark and lived with Joachim first. And since she has - unlike Alexandra - given up her job already I really don't see why she is not going to live in DK before the wedding.
Well, I wish them the best and IMO she seems to match better with Joachim than Alexandra did but sometimes I really wonder whether Joachim isn't doing the same mistake he did the first time. Rushing into a marriage and then find out the person you chose doesn't really match with you. As someone else said before, if he really intends to live in Schackenborg permanently I have the feeling he has chosen the wrong woman again.