FWIW there was a BritAnon in one of the breads who said as soon as he saw the photo, he knew it was a Royal, and it looked like a dead ringer for Edward. The characteristic clothing, profile, height, and stance.
Regarding the Kindergarten there…I'm not saying its a red herring, but there are hundreds of these small kindergarten private schools in Hong Kong. They appear and disappear just like any other business.