That's just obscene in my view. Surely that money could have been better spent in Saudi Arabia to create business enterprise therefore leading to jobs and improvment in economic growth. I don't begrudge people having money nor spending it how they wish (although Disneyland???), but oil is the cause of many of the world's problems, particular concerning conflict. 15million euros for three days of fun has the Gypsy wedding costs beat hands-down.
Well Saudi is starting to become less important in oil and gas production in light of American, Russian, Australian, Canadian and well several other countries finding large or potentially large reserves of oil, gas, shale gas etc. in their terf.