Yes, that's the difference between the wedding registration, which consists of only submitting a form at the town hall and results in being married in the legal sense, and the wedding ceremony, which is what the characters are doing now and is just a kind of party (you need to have done the former before you can do the latter).
you don't have to worry about it though...damn what a scam the wedding industry isintrovert got no chance
so they're getting married more and more?And that's why in many country there are less and less people that never get married.