The theory about William having a panic attack/being unable to do the reading makes sense. Esp if as a pp said, he normally makes a speech at the BAFTAs but didn't this year.
Would he not still try to at least attend the memorial? Esp given he didn't attend the funeral? Although he'd have to explain why he didn't do the reading when he's in the order of service.
I highly doubt there will be a divorce. Their body language etc looks happy to me. The marriage might be happy but yes the stress must be enormous so perhaps Kate is having an operation but making the most of the time to recuperate.
I know a teacher at a school where an EXTREMELY wealthy and high profile person sent her kids in the 2010s. The bodyguard for each child sat at the back of the classroom.