Have you ever taken the tour of London on an open topped tourist bus?

Yes, when I was playing tourist. The professional tourist guides are very knowledgeable as they have to be certified. Just like the taxi service, proper tourist guides are educated in their job and that makes a huge difference. It’s well worth the tour.

yes
and Barcelona New York Rome Miami and Venice by boat

No, although I have been to London several times.

I have, it's a great way to see London.

No... not yet 😉

Matter of fact 👍😎

Yes.