I received a very nice email reply from the chaps at Kemble giving their perspective, and saying that they hope I will visit again. I have undertaken not to copy/paste the email here but suffice to say I think the issue has more to do with how they have communicated than what they intend, which seems not to be as draconian as the amended AIP entry makes it sound.
Anyway, I am very pleased with the responsiveness to my email and so, in a spirit of goodwill, I intend to call by for brunch and a chat on Saturday on my way down to the west country.
Andy