I can't quite get by the fact that the future king and queen, at the height of fevered speculation, did a bit of shopping in a busy farm shop, and only one person took one video clip.
A pp argued that locals might not have been so fast on the phones, but there's always tourists in that shop (local to my own folks), and the possibility of glimpsing a royal is a bit of a thing. If that was Kate, did she look so different that people genuinely didn't recognise her?