They also want Archie's birthday acknowledged in some way on Coronation Day.

I like this bit from the article: Typically, balcony appearances are reserved for working members of the royal family, however it has been reported the couple believe they should be a part of that 'special family moment'.

Actually, this "tradition" is less than a year old and was started at the Platinum Jubilee. It didn't take long for this reporter to have forgotten all those photos taken on the Monarch's official birthday.