Just landed on JAL67 at NRT T2. There was a 5 minute wait to find out who they were letting off first, they were told to let transit off first. Deplaned and there was someone standing at the end of the jet bridge that checked boarding passes to verify we were in fact transiting, nothing else was checked After she did a quick look we were free to roam the international terminal. i’m now sitting at the JAL F lounge drinking a The Premium Malts beer wishing i could enter the country.

Also this was on separate tickets, nobody batted an eye at that, even when checking in at SEA. Helped they were both JAL (awards) but they just merged them then booked me and my luggage through, took 5 minutes. Make sure you have something to show them when you deplane.

EDIT to add: when boarding JL717 to BKK, they just did a passport and boarding pass check. through the whole trip, the only people who looked at my vax card was checkin at SEA and immigration at BKK. This has been the first “normal” international flight i’ve had since returning from japan in early 2020.