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The only thing I'm actually sceptical of in this case is the painting of walls.
It happens though.
The CEO of our (very large) company came to visit last year some time and had a meeting in the office I work in (which houses ~1000 people).
The route the CEO was taken on, including the stairs to a different floor, had been carefully mapped out long in advance and everything along that path was tarted up. New carpet tiles on the floor, all walls painted, even new door furniture where it was showing signs of wear an tear. That was about 1/20th of the building, and it was so obvious for several months until they finally felt guilted into sorting out the rest of the building.
The only thing I'm actually sceptical of in this case is the painting of walls.
Stuff like everything suddenly being cleaned much more thoroughly etc. is pretty standard fare for politician's visits. I was working for 'Agroscope' at some point (Swiss federal agricultural research institute), and the then federal council member Schneider-Ammann visited from Bern (including landing in a helicopter and everything...). You can be sure everything was cleaned up real nice, including getting rid of leaves etc.
As for no one really wanting to talk to him, well, doctors really do not like him, in general. It might well be exaggerated, but not completely unbelievable. And sliding in / out of a side door, isn't that exactly what he did at Addenbrooke's too?