The Royal Yacht, the Norge, waits for its passengers on May 10, 2017 as part of the 80th birthday celebrations of the King and Queen. / AFP PHOTO / NTB scanpix AND NTB Scanpix / BERIT ROALD / Norway OUT        (Photo credit should read BERIT ROALD/AFP/Getty Images)
(L-R) Countess Sophie of Wessex from the United Kingdom, Prince Albert from Monaco, Grand Duchess Maria-Teresa and Grand Duke Henri from Luxembourg shelter from the rain under umbrellas as they depart from Honnorbrygga in Oslo to go on a trip onboard the Royal Yacht on MAy 10, 2017 as part of the 80th birthday celebrations of the King and Queen. / AFP PHOTO / NTB scanpix AND NTB Scanpix / BERIT ROALD / Norway OUT        (Photo credit should read BERIT ROALD/AFP/Getty Images)
OSLO, NORWAY - MAY 10: Grand Duke Henri of Luxembourg, Queen Mathilde of Belgium, Princess Beatrix of the Netherlands and  Queen Maxima of the Netherlands have their photo taken in a boat on their way to attend a lunch on the Norwegian Royal yatch 'Norge'to celebrate the 80th birthdays of King Harald of Norway and Queen Sonja of Norway on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
OSLO, NORWAY - MAY 10: Prince Daniel of Sweden and Princess Victoria of Sweden  attend  a lunch on the Norwegian Royal yatch 'Norge' to celebrate the 80th birthdays of King Harald of Norway and Queen Sonja of Norway on May 10 2017 in Oslo, Norway. (Photo by Nigel Waldron/ Getty Images)
OSLO, NORWAY - MAY 10: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg attend  a lunch on the Norwegian Royal yatch 'Norge' to celebrate the 80th birthdays of King Harald of Norway and Queen Sonja of Norway on May 10 2017 in Oslo, Norway. (Photo by Nigel Waldron/ Getty Images)