The thing that makes me uncomfortable is that, with all the attention and riches bestowed on royalty, can it be described as idol worship?
Britannia's definition of idolatry includes "Gross or overt idolatry consisting of explicit acts of reverence addressed to a person or object, the Sun, the King, an animal, a statue."
But we have that here too with Hollywood stars, Rock Stars, Sports stars, Fashion industry, etc...all overpaid, all enjoying the attention and riches. But who's to say that these idols aren't giving a lot of their riches away and just not boasting about it? Who can judge because many of us have "things" that take up too much of our attention.