I agree. It's amazing how little time it can take to move lock, stock, and barrel.
I managed, on a much, much smaller scale, to move twice in 72 hours, home to storage to new home. A crew came in and packed for me, moved it, then moved it again and unpacked it. And I'm not a HNW person.
I imagine someone who is simply leaving one residence pretty much 'intact' and moving to a new furnished residence and who has the wherewithal to pay for it, would simply pack a few bags (or have staff do it) and hire someone to pack the rest once they've found their 'permanent' home.
I think it's doubtful that KC knew anything more than that they were 'thinking of it'. They would have been putting out feelers before making so big a move. I'm sure he murmured something about getting to know the children better that could have been taken for approval. Even if he'd given them a list of 'dos and don'ts' they wouldn't have listened. After all, doesn't he know who they are?
Anyway, that's my theory and I'm sticking to it.
HAM reminds me of a person I worked with who simply felt the rules and polite conventions we all observe didn't apply to him. We used to joke about him that any instructions he was given, any signs he saw he saw the words 'except for 'John'' tacked on to the end. "No Parking <except for 'John'>, the workday here starts at 8 am <except for John>. You get the drift.