That is the postal code for every building around it -- use google maps to click on the buildings like Kawasaki and the wedding venue at the Intercontinental -- and should be fine for the purposes of the app... Sometimes hotels can have odd postal codes that their system won't recognize.... As someone that lives in Tokyo I'm certain that using that postal code is 100% fine.

Thank you, now waiting that they confirm my vaccination certificates.

According to Timatic, it's not required. I'd love to hear first-hand experience that one doesn't need to use VJW and can just show Vaccine certs at check-in though.

I flew to Tokyo UA 11 days ago and at check-in the agent requested to see my QR code -- I had used VJW so I had it but have no idea what would have happened if I didn't... I can tell you that in immigration they were asking to see the QR code before you even got to the officers and everyone had it...

This video compares the experience for fast track and non fast track passengers. It dates from a month ago, when MySOS was in use, but the process at check in and arrival may be roughly the same:

My Customs Declaration and Immigration QR Codes have blue lines, the lines above the codes of my wife are yellow. I don't see any difference in our applications, what can be the reason for the different color? Fasttrack is blue for both.

Mine are Yellow for Immigration, Blue for Customs and Quarantine, the same as my trip last month. Then I was plane to train in less than 40 minutes with the only issue being that the passport reader at Immigration was being a little difficult. Immigration was 3 minutes instead of 1, longest part was waiting for the bags to come up.

Any recent reports on what to do for a HND<->NRT transit? Paper forms are fine, but I'd rather have it dealt with beforehand. Just put the address of the airport where you're going?

On the visit Japan App - it doesn’t specific whether a PCR arrival test is require for infants. Does anyone know (I’m vaxed twice).

See the FAQ PDF on https://www.mhlw.go.jp/stf/covid-19/border_test.html ; Ch 11. Short: accompanied and under age of 6 no tests.

You'll need one, too (exempt only for 3+ vaccinations)

What a new organisation of immigration in Narita. Already waited about two hours there and it will take at least another online. No water, it's hot, no seats. Haven't expected that in Japan, but ok Christmas seems to be high season for visitors.
If you haven't got COVID before you will surely get in in this crowded immigration line.
No Fast Track for people with QR code, only with Japanese passport and resident permit.

I entered NRT yesterday and it was quite crowded. 2 United flights arrived at around the same time (SFO and LAX). One tip - I thought I was being clever and printed out my QR codes (so I don't have to play with the phone). THEY WILL ONLY ACCEPT WHAT'S ON THE PHONE. So I would suggest opening the website as soon as you land (if you have data) to ensure a smooth process. The immigration line was about 20-25 minutes. By the time we got out our luggage was already off the belt and put by the side.

They accept screenshots too. And it was 3 hours at immigration when we arrived, so I wouldn't calculate with just 20 minutes.
I really haven't understand why they not offered water to the people waited there for such a long time.

,
 

Arrived HND this morning. They are no longer separately deplaning transit and exiting pax so no sitting on the plane for 10 minutes. (That's an improvement.) Quarantine part of VJW is very straight forward except at the top of the jetway there were 50 people in pink bibs waving pink sheets all gesticulating wildly and all pointing in different random directions. I thought they might be filming one of those kooky funny Japanese TV shows.

Long lines at immigration including the ABTC line which has been taken over by families with young toddlers and old people in wheel chairs. Soon as I got in line for that I spotted an empty line for normal visitors and was able to walk right up. The new QR code for immigration doesn't speed anything up. Still need to show your passport, have your photos and fingerprints taken, plus the immigration officer now has some separate extra stack of cards and needs to scan one for each passenger and then put it into a separate stack to make the system work. Now that Japan is going digital, processing takes twice as long as it did in the papyrus age. No wonder there were long lines.

Customs is equally struggling with the 21st century. Lines for the digital custom clearance require you to walk to one of the far ends of the customs hall and then snake your way through the cordon bands after which they tell you go back and scan your QR code at one of the newly installed kiosks. (After all it would be silly to just show them your QR code, rather than having it scanned in a separate location, which produces a piece of paper you can show them.) Get to the shiny new kiosks (which make USAF coffee pots look cheap), where again there are lines because each person attempting to scan their QR code can't figure out the bizarre user interface.

Fortunately for me I had forgotten about my QR code and by force of habit had absent-mindledly filled out a paper customs form on the airplane. One of the new employees (among the legions recently hired to help ease baffled travelers through the passage into Digital Japan) spotted the form dangling from my pocket and surreptitiously pointed to one of the old fashioned lines left over from the Meiji era. As I was thanking her, she glanced at one of the wonderful new kiosks and rolled her eyes up. As I was walked to the line, I saw her being dragged away.... presumably insufficient enthusiasm for Digital Japan.

The old fashioned customs line took less than 10 seconds. Out the door (no checked bags) and into my waiting Uber 7 minutes after stepping off the plane. (If only I had properly followed the new process, I would have been able to spend an extra an extra hour in the airport marveling at the modern miracle of Digital Japan.)

BTW - for those of you who might need additional help getting out of the airport, there is a 92 page manual (seriously) for the Visit Japan website, which is in PDF form so that you can conveniently print it out and study it during your flight.

+1 -- All of this is so true.... You only forgot to mention how warm the immigration hall is now -- or just how long that line for the new improved "digital" customs area is -- I took one look at that -- filled out the paper form -- and was out the door and on the way home in under 2 minutes.... Japan is normally much more thoughtful and efficient -- the "new" process is literally a train wreck....