I want to travel from Tokyo to Fukuoka. I actually want to try Shinkansen I'm traveling with 2 girls age 3 and 5. When will you travel?
You can save the regular JR cost by half by choosing non-reservation rides, which sounds practical unless you travel during a busy time.
Up to two little kids (roughly under 6) accompanied by one adult can have a non-reservation train ride free of fees.
If you travel back by Shinkansen within 7 days to Hiroshima, Shin-Osaka, Kyoto, Tokyo or further, a 7-day Ordinary-Class Japan Rail Pass (29110 yen for one adult) can pay off.
From Tokyo / Shinagawa to Hakata by Shinkansen: Ride on Non-Reserved car(s)
: The regular JR cost for one adult is 21810 yen
(= 13820 yen as a basic fare + 7990 yen as a Shinkansen charge).
: The two kids under 6 can travel free of fees as long as you accompany them.
From Tokyo / Shinagawa to Hakata by Shinkansen: Ride in reserved seats
: The regular JR cost for one adult is 22130 to 23150 yen
(= 13820 yen as a basic fare + 8310 to 9330 yen as a Shinkansen charge).
: The regular JR cost for one child (roughly under 12) is 11060 to 11570 yen.
: The total regular JR cost for you and the two kids is 44250 to 46290 yen.
Shinkansen route from Tokyo to Fukuoka? The Shinkansen route is
Tokyo -- Shinagawa -- Nagoya -- Kyoto -- Shin-Osaka -- Okayama -- Hiroshima -- Kokura -- Hakata.
Tokyo Station and Shinagawa Station are in Tokyo Metropolis. You can choose your first Shinkansen station from the two.
Hakata Station is the Shinkansen terminal in City of Fukuoka, Fukuoka Prefecture.
(If your destination is in another part of Fukuoka Prefecture, it might be better to descend at Kokura Station, which is in City of Kitakyushu, Fukuoka Prefecture.)
[Train services on Tokaido & San(f)yo Shinkansen]
When you travel with regular JR tickets,
you can take one Shinkansen train of the fastest "Nozomi" service from Tokyo / Shinagawa to Hakata.
When you travel with a Japan Rail Pass,
you cannot choose the fastest "Nozomi" service from Tokyo or the fastest "Mizuho" service from Shin-Osaka,
but you can alternatively take two Shinkansen trains of the second-fastest (a little slower) "Hikari" and/or "Sakura" service(s) to Hakata.
Shinkansen trains of "Kodama" and "Tsubame" services make stops at all stations on the way, and require much more time than Shinkansen trains of the above four services.
- Japan Rail Pass: Tokaido, Sanyo and Kyushu Shinkansen
http://www.japanrailpass.net/nozomi/index.html: An explanation in English is below those in Chinese.