That must have been a fun reunion. Unfortunately, I don't think any Japanese Jungle Cruise CM's visit this forum. Or, if they do, they don't post.
The thought being that if anyone either lives there (Military etc.) or is planning a trip there anytime soon hopefully they would ask about it.
I can ask some of the skippers during my next visit. What exactly should I be asking them? :-) Do you happen to know of any of the Japanese crew members' names?
Look for the Disneyland Jungle Cruise map and the Florida Jungle Cruise FastPasses. We didn't know anyone specifically there so we labeled it specifically for the Attraction with a note in Japanese explaining what it was and pictures of our Jungle Cruise and what we did with our stuff.