2- once again, it appears that I did less-than-fully-complete research; that said, I will attribute this to using Google Maps on my phone, which shows Gifu but not Nagoya
the original destination of record is in fact the closest major airport *with substantial international service* to the park, but is actually the *second* closest "major" airport
as for the remainder of this guess:
- JL is INCORRECT for the first airline
- HNL is CORRECT for the intermediate stop
- NRT is INCORRECT for the connecting point
- NH is INCORRECT for the second airline
- 747 is CORRECT as the aircraft type