Things we love

They have the busiest train stations in the world, yet still apologise when a train leaves early. The food - THE SUSHI - is incredible.  You can eat in Michelin starred restaurants for under ¥1,000 (less than a tenner).  They treat coffee like its a fine whisky. There's 24 hour shopping so you can entertain yourself while jetlagged. It really is a city that never sleeps. 

Things we wish we'd known

You need to book pretty much everything - this is one of the busiest cities on the planet. You have to carry your passport with you everywhere. If you're not from Japan, you look weird.It's really easy to be accidentally rude. Don't sneeze loudly, and bow to everyone.