Let me say straight away, I'm no Royalist, in fact I'm agnostic - I couldn't care less one way or the other. But if you look at the overall transmission of this wedding, you can't fail to be impressed at just how well the UK does pageantry. We are the envy of the world.
Stop and think how much the UK earned just from the worldwide transmission rights, let a lone the tourist revenue it generated. This link gives a clue as to how much may have been generated from William and Kate's wedding. Given that was seven years ago, it's fair to assume, Harry and Megan's will generate at least as much, if not more.
Sometimes, whatever your personal feelings, it's better to look at the positives.