Infinite
Brown Belt
Seems more like he didn't make very good plans from the get-go. If I'm doing something like travelling all the way to Japan, I'm going to make sure that the training I'm going for is available before I leave -- and I'll know when it starts. And I'm going to know what the dress code is for the event. And I'll make arrangements to be sure that there'll be a translator if language will be an issue. In short -- I'll do all I can to be prepared before I get there.
Now, I can see making the plans, knowing the times and being prepared and still getting screwed up because of unforeseen traffic or something like that... In fact, I've been there. There's an etiquette to joining a class in progress - or not doing so, as may be appropriate. It seems like this guy didn't get that... Nothing is more disruptive, in my opinion as both a student and teacher, than to have someone pop in late, and try to jump in with everyone else. Wait for a break or pause, and ask to join the class... Or watch quietly from the side.
Hey man I learned this from Karate Kid!
You show up you wait by the door and eventually someone will approach you. Till then you watch I think watching is under rated in this world. Watch observe then comprehend.