If you are so desperate to be a Royal here is your opportunity; The Principality Sealand http://www.sealandgov.org/ will help you in this matter, well.. the “Kindom” is quite small and not beach either.
I discovered that there are so many like this one, this behaviour is called Micronation http://en.wikipedia.org/wiki/Micronation and simply blow my mind.
I guess instead of paying for becaming a Royal, I may start my own Kindom too 😉
I let you check and decide by yourselves.