There are at least six Kiwis that I can immediately think of. If I tried hard I'm sure I could come up with a few more. Whether they frequent these pages I have no idea. From what I can see they get on well with the commute (well, as well as anyone can get on with commuting) and I haven't heard of any specific complaints. ANZ seem to be a pretty good bet for the flight. Have a look at their website and imagine how you'd get back and forth to Japan and you may be able to answer a couple of the normal questions that get asked. Hopefully someone will PM you with some proper NZ advice.