Great list. Good laugh in the morning, Allan. I’d like to add:
19. When you’re on the Chinese wall, don’t congratulate your hosts with their great effort to keep the Mexicans out.
20. Do not ask your Japanese host to show you around in The Hiroshima memory park because you ‘want to see the fabulous effectivity of nuclear bombs with your own eyes’.
(Happy you weren’t riding along the Hudson when the Uzbekian coward executed his criminal plan.)