Note:
The HCGB doesn't publicise the event because it doesn't want the general public turning up in large numbers. I don't regard people who use this specialist forum as the general public.
The Heythrop Park Hotel will remain open for business as usual throughout the Championships.
The Precision Flying competition is particularly enjoyable. It's interesting to watch PPL, commercial and military teams competing - sometimes with unexpected results!
That will be held on the Sunday.
Note:
I've just called the Hotel. All rooms are currently fully booked for that weekend (subject to any cancellations nearer the time) but the restaurants, bars and (extensive) grounds will be open to visitors as usual.