The question is, is there precedent for unintentional last minute stays at Buckingham Palace?
I tried to find some information but apparently, unofficial visits are not made public.
Mike Tindal says he has stayed at the Palace a fair few times and it was a fairly casual atmosphere. I don't know if Eugenie and Beatrice have.
In any case if there is precedent and it simply isn't being done for H&M then perhaps H has legitimate cause for complaint.
It is stretching my credulity more a little bit to believe that well versed and experienced staff (some who have worked for decades) and housekeepers that attend and deal with large state functions and all manner of dignities and entourages would find it difficult to accommodate last minute plans. There has to be protocols for when Royals attend that are written and followed and likely well rehearsed including for emergency contingencies. Nothing is going to convince me that BP staff weren't up to the task and couldn't manage that, and if they are slightly put out.... they're staff.
I believe it could have been done.
I'm not well versed on the security but believe BP must have security Insitu and again, surely some cover could be found and paid for privately by KC he's not short of a bob or two.
I find the press coverage distasteful and it is, to my mind, getting put of control in terms of its focus on highlighting negative interactions between KC and his son. They're a dysfunctional family, but the press are salaciously hyping up every aspect of the fallout. How can there be any room for reconciliation in such an atmosphere?