For those not in the know: Prince Bernhard (deceased), husband to former queen Juliana (d), was infamous for his (heavily debated) membership of the Nazi party and first chairman of the (also heavily debated) Bilderberg conference.
Aside from that, the royal family is very, very rich and has a lot of influence over the world. Part of their wealth is supplied by the Dutch government, without clear numbers and lots of misrepresentation on the yearly budgeting, a government that is by the way nicely massaged by the many global companies having a nice office in the Dutch tax haven.