What Do the Royals Do For New Year's Eve?

We all know that a royal Christmas is made up of church services, black die dinners, and gag gifts, but when the formalities and traditions are over, how do the various members of the family choose to ring in the new year? Some of them are on a plane faster than you can say "passports please," winging their way to various corners of the globe, while others opt for ultra-exclusive house parties and even the wilds . . .