Although, as a youngster part of the appeal of going to Culdrose or St. Mawgan was that of visiting somewhere that is normally out of bounds.
Culdrose is still going, but of course like all the others it has shrunk in what it can offer. Highlight back in the 80s for me was Concorde doing a wide circuit which passed directly over my field at about 700' AGL. Over the years it's had some terrific displays, including the Reds (frequently) and Vulcan 558 a couple of years back. It has however been cursed by bad weather, one year you couldn't see the tops of the lamp posts in Helston and even the seagulls were walking!