Some more news about the royal guests attending :
-The Swedish royal Court confirmed today an invitation had been sent to but due to the Italian President official visit taking place on the same day, no member of the Royal family will be able to attend the Prince of Wales birthday.
- No official confirmation yet but the King and Queen of the Netherlands along with Princess Beatrix may attend. Sure there is an Austrian stat visit planned on the same day, but the King isn't hosting the State Banquet on the evening that day...the Prime Minister Mark Ruttewill. That's unusual, and may be very well be a sign W1 A + Queen Bea attending the birthday bash !
what about the arab royals?
Saudi Arabia: hope not BMS
Jordan:Abdullah and Rania for sure maybe also some other senior royals like Prince Hassan and his wife.
from UAE: Sheikh Mo and Haya,CP Mohammed Ben Zayed maybe
Morocco:most probably Meryem but i hope Moulay Rachd and his wife Moulay hassan would be great lool