Each time I would depart post, I would prepare what we call Turn Over Notes as a guide to the person coming to replace us. Fortunately, I still have one of those that I prepared for my replacement in Tegucigalpa, Honduras. That's the post where I had the most responsibilities so hopefully, it will cover whatever I end up doing in Singapore.
I've been to Tokyo once but no other place in Asia. It should be a great experience for me and you know I'll be looking for every opportunity to capture the experience with my camera.