Why is CG grumpy in every damn pic? So rude!
Well, I think he is grumpy because in the Netherlands he has to face that the new generation is coming and that he has passed his sell-date or do you say "best-before-date".
He is no more the golden "lill prinsen" he is an old man...a quite boring figure of no interest. Perhaps he even realises that his life has been a life that have not had very much impact. He and his wife have been something that have entertained us and whose primary function have been to look pretty, glamorous and so on....which they no more do. Even kings and queens gets old and then we have a tendency to lose interest in them....
Beatrix did the right thing and abdicated but CG is spoilt and he will never do that....so I just think he hates every minute with Max and Wax because it reminds him of the demands put on him to abdicate that sometimes are raised in the swedish debate....
Thanks for the interesting answer, Lilla!

Maybe he is also realizing that instead of whoring around most of his life, he should have done his most important job in any of our lives, insuring the success of the next generation ( especially his son!)