Imho relatively abnormal popularity of cabrios despite rainy climate is UK specific thing, not sure it would add that much of extra twins sold numbers world wide. I certainly know that i'd never consider cabrio to have heavier, less rigid and more expensive car that is even noisier due less sound insulation, and easier to break into. Only way i'd think of getting such if car had been designed as roofless from ground up and only option possible, like MX5 or S2K. As for good things that cabrios provide .. imho motorcycles are even better at those.
Damn. That mentioned meet looks to me as enviable event i'd much love to get to. Lot's of cars i like, lot's of people with similar tastes/interests, and on top able to meet/talk with Tada san :). 👍