Originally Posted by
tengssuuciurta
You will not be allowed through any crew line in Japan, or the rest of Asia for that matter without a uniform. Wear it.
Incorrect.
Had a JS NGO to CVG the other day, business casual (slacks and a polo). No issues with customs, nor would I expect there to be.
Your actual issue is, while Customs compliance are a great bunch, sometimes they have outdated info on where to join the crew. My advice is ask for the captains email and message them directly about where to meet.