What is all this fuss about the royal wedding?

Not to insult those who strongly believe in this or… am I even making sense?
Anyway, my point is what is all the fuss about the royal wedding? Now everything I see has to do with it. I go on the internet and things are popping up, clothes are out, go on Youtube there are loads of tutorial and so on. Its getting a little annoying.
What is it about. I mean people who are not even invited there are freaking out about it and stuff.

Why is it so?