1. Think of some stuff to do and/or an event to centre the trip around (./)
 1. Negotiate a suitable set of dates with your comrades (./)
 1. Check prices for airfares and jiggle the dates until optimal (./)
 1. Apply for and confirm your leave
 1. Book airfares
 1. Figure out where you'll be and book accommodation
 1. How many yens will you need? Buy some yens

TBC