HRH Prince Aimone of Savoy, Duke of Apulia, and HRH Princess Olga of Greece were married in a civil ceremony at the Italian embassy in Moscow, Russia, on September 16th. A religious wedding will take place on Patmos on September 27th.
Why Patmos, you may ask. Prince Michael and Princess Marina of Greece have had a summer home on Patmos for more than 20 years now. Thus, the perfect place for their daughter's marriage to the future head of the Italian royal family.
This information was confirmed to me by a family member.