It's an interesting calculation each royal family has to make, and certainly the British family has made different decisions than the Scandinavians. I guess it depends on the way things tend to be seen in the context of each nation's cultural norms. To my point of view, the Scandinavians show that you can keep the glitz and ceremony in a way that welcomes the common people into the celebration, especially with the details of televising the dinners and speeches and such so that everyone can feel they've been a part of it.
I have to admit I sometimes struggle to not harshly judge the British family's approach. To me, the way they keep so much behind closed doors and the way they hold themselves at arm's length from royals of other nations feels very snobbish, setting themselves quite high above the average person or even the average royal. But I'm not from the UK, so I'm not who they need to worry about. Of course they must instead think more about what would be consider too showy or ostentatious in the British popular opinion. And what looks snobby to me may look restrained to them.