My husband & I have already started a DONE4. We bought our tickets through JAL & started our trip from Tokyo. One of our flight coming up is with Cathay SEA-HKG-BKK. In anticipation of those flights potentially being cancelled or Thailand issuing restrictions for passengers transiting through Hong Kong, I want to change our flight to JAL SEA-NRT-BKK. Cathay has already cancelled our original flight but rebooked us a day earlier on another flight. There is not telling if this new flight will also eventually be cancelled as the situation does not look good for Cathay at this time.

Providing seats are available & open for RTW passengers, would I be able to transit through my departure city (NRT)? I know I would not be able to do a stopover but this would only be a 2hrs layover. Our options are very limited as we have to cross the Pacific because we crossed the Atlantic at the beginning of our trip. The only possible routes from SEA considering this, are through HKG or NRT. Going through London with BA is not an option as it would add a continent to our trip unless a layover in a separate continent would be authorized without counting it as a continent. In the event that either Cathay cancels the flight with no possible rebook or that Thailand issues restrictions (like other countries have done), would JAL be responsible to get us to BKK through a different route & flight or would we be on our own to resolve this issue?

Just trying to get expert advices before calling JAL as often the agents do not know the rules. I'm trying to be as prepared as possible. Any help would be greatly appreciated.