I knew one of those 10,000 princes back in the day. To be fair, he was impeccably cordial, affable and hospitable. A prince of a guy, in fact. (see what I did there?) His bisht had more gold in the embroidery than most women have in their jewelry boxes, yet he displayed no arrogance at all, and treated the poor Arabs at our school with complete warmth and as peers.
As I think about it he may have been Kuwaiti rather than Saudi.