As for the royal wedding, I think it, the monarchy has a certain romantic appeal to Americans. It portrays England's rich history. The wedding is like a fairytale. Plus, I think a lot of the interest is related to Princess Di. We in the states loved Diana.
I have to agree, however. The amounts of money spent for that wedding is ridiculous, when the economy is failing over there.... Maybe it did draw tourism, but still. It's all in appearances to me. And furthermore, it's over. Why is it still on my news???