How???
http://www.news24.jp/articles/2015/12/30/07318590.htmlIf couldn't play above by "IP address block(out of Japan)" watch below.
https://youtu.be/YKv0Z5GaPI80:17-21 is Shinkansen Non-reserved seat car at Tokyo looks pretty bad :(
In that date a lot of seasonal fastest shinkanen "Nozomi" increased
but Japan Rail Pass holder cannot take/book Nozomi.
Slower Hikari and Kodama(Pass covered) have more non-reserved cars than Nozomi
but operate numbers not so many just getting a seat chance a bit higher.
Hikari : 2 trains/1hr(next is 30 min later) about
Kodama : 1 train/1hr (fixed) non-reserved car more than Hikari but slowest will stop all stns.
Nozomi : 9 trains max/1hr (on peak hour)
All shinkansen 16 cars about 1300 seats but not enough.
Each car have 2 doors about 100 seats
(except front/end cars with opetators room and long nose)
so waiting line under 40 travelers you can get the seat.
Over 40 to 50 is no safe depends on other side travelers entering speed.
So above video travelers did pushing/pressing reason is this.
But pushing/pressing is not always if busy week.
https://wordleaf.c.yimg.jp/wordleaf/thepage/images/20141230-00000016-w...http://seasonitems.com/wp-content/uploads/2016/07/%E6%96%B0%E5%B9%B9%E7%B7%9A%E3%83%A9%E3%83%83%E3%82%B7%E3%83%A5.jpg
http://www.sankei.com/images/news/150812/wst1508120049-p1.jpgTake afternoon Hikari a bit better.
Waiting line is in two rows.
http://art12.photozou.jp/pub/874/141874/photo/24434291.jpgPeak hours a lot of navigate sign boads/plates staff standing.
http://vpoint.jp/wtview/wp-content/uploads/ph131229-1.jpg最後尾(sai-kou-bi) means waiting line END.
Oops, I forgot most important thing...
N'EX to Tokaido Shinkansen "for West" Nagoya,Kyoto,Osaka and more
basically transfering at 2nd stop Shinagawa usual by shorter distance than Tokyo.
But in this case no escape transfering at train dep/end station Tokyo.
At Shinagawa non-reserved travelers are no chance.
NRT ticket counter staff also recommend late after peak trains.