If they were photographed at an Italian airport near Milan, I think it's quite likely that they could be attending the wedding, particularly given the fact that MM is friends with Beatrice and Carla Sozzani.
Though I find it odd that just Marius is with them. Does anyone know if Ingrid Alexandra and Sverre Magnus were there, too?
Aw, poor Ingrid Alexandra. As someone who is unable to perform speeches due to nerves (not that I'm saying Ingrid Alexandra is), I can sympathise with her. Only last month, I had to perform a speech I had composed myself, and before I even said the first word, nerves got the better of me and I froze on the spot and someone else had to read it out for me. Perhaps the thought of knowing that the speech was going to be listened to by the nation just dawned on her, and 11 is a young age to be performing such a speech. It is cute to see that she was still smiling afterwards though.

Do you know what the speech was about?
(Just to let you know - the article isn't translated, it's still in Norwegian for me)