Tokyo is amazing but I only got to spend a day there. The people are the nicest you will ever meet. If only I knew then about the local meets. Some members from here have posted pics they look amazing. Do your research before you go
Dubai- lots of rich Arabs with awesome awesome cars. If your there on a Friday just go down to the JBR, have a meal in one of the restaurants on the upper level, ask for a balcony seat and enjoy watching the cars on show. Was there on my honeymoon and that's what I saw on the first night. Wasn't expecting it- my missus defintitely wasn't expecting it! She still moans 4 years on