JapanCustomTours: and revisions are usually pretty minor
Yes; in the revision in the coming March there seems to be only a minor change on the Sanyo Shinkansen.
In my previous response, I recommend your checking on the JR official website to make sure.
(Timetables for the Tokaido Shinkansen (of JR-Central) and the Sanyo Shinkansen (of JR-West) are available on the websites of both the two JR companies.)
[Meitetsu - JR transfer]
pandy2026: We will be taking the Meitetsu airport train to Nagoya on the 19th March and sort out our JR passes at Nagoya station.
Instead of walking from Meitetsu Nagoya Station to (JR) Nagoya Station,
you can make a simple and quick transfer from Meitetsu to JR in Kanayama Stations;
then you can take a train (departing at Track 2 or 4) for about 3 to 8 minutes to Nagoya Station.
- Map of Kanayama Station(s) http://english.jr-central.co.jp/info/station/_img/kanayama_L.jpg
: The two Meitetsu platforms are between the two JR platforms,
two Meitetsu gates and one JR gate are close to each other,
and a JR ticket office is near that JR gate.
[Admission fee of Nagoya Station] I suppose I can use the pass to go through the Shinkansen gate and take a look at track #16.
Strictly a Japan Rail Pass does not allow you just to get inside then outside the JR ticket gate(s) of one same station.
(To get inside a JR ticket gate not for a train ride, even a commuter pass holder should pay an admission fee.)
The JR admission fee of Nagoya Station is 140 yen per adult person, and the ticket is good for 2 hours.
[Choices of JR pass and transportation mode] Nagoya-Takayma-Hiroshima-Miyajima-Osaka-Kansai airport (we'll have side trips ie:Kyoto, Kobe etc) from Takayama to Hiroshima on 21st March
Will you fly out by 25 March?
Then, it may be better to use the previously-mentioned JR-West pass from 21 to 25 March,
taking the advantage of its validity for Shinkansen Nozomi and Mizuho train rides between Shin-Osaka and Hiroshima.
In that case,
you can purchase JR regular tickets on 19 March at a JR Ticket Office in Kanayama or Nagoya Station
for the leg Kanayama or Nagoya -- Takayama on 20 March
and the leg Takayama --Nagoya -- Shin-Osaka on 21 March.
The total amount of the JR regular fees for these two legs is
16930 yen / 15330 yen per adult passenger
when you go with your seats reserved / do without seat reservation,
on the condition that you choose Hikari on the Shinkansen section Nagoya -- Shin-Osaka.
A JR-West Kansai-Hiroshima Area Pass,
when you book it through the official website, is sold at 13500 yen.
So, the total cost (on your major legs) is 30430 yen / 28830 yen,
about the same as the price 29110 yen of a 7-day (Ordinary-Class) Japan Rail Pass.
Between Nagoya and Takayama you might hope to travel by bus instead.
When you have round-trip bus rides, the bus fare is 5140 yen,
and the total cost (on your major legs) becomes 25190 yen / 24470 yen
(plus 170 yen for the section Kanayama -- Nagoya if you make a transfer in Kanayama Stations). https://www.nouhibus.co.jp/english/highwaybus/nagoya.pdf
[JR-West Kansai-Hiroshima Area Pass]
With this JR-West pass, even though you cannot have a reserved seat,
you can choose also Nozomi and Mizuho on the Sanyo Shinkansen section,
so I suppose you much more likely to secure your seats
compared to when you can choose only Hikari or Sakura due to the restriction for Japan Rail Pass travelers. http://www.westjr.co.jp/global/en/ticket/pass/kansai_hiroshima/
In Shin-Osaka Station, the Shinkansen zone is managed by JR-Central;
you can go out through Central Gate and visit nearby JR-West Travel Corner,
where you can get your JR-West pass.
- Map of (JR) Shin-Osaka Station http://www.westjr.co.jp/global/en/timetable/pdf/station_shin-osaka.pdf