One of our staff was passing by JR EAST Travel Service Center at Narita Airport on April 5th and saw a long line there. There is a sign that says you have to wait 90 minutes!
Most of people there were foreign tourists who want to get Japan Rail Pass by presenting their exchange orders. If you choose Japan Rail Pass, you have to expect long lines at JR Ticket Service Center at airports. After long flights, hassling with heavy luggages and immigration, you end up waiting 90 minutes to get a pass. We believe this is not a good experience...
Regular seats used on Reserved cars and Unreserved cars of Shinkansen. Consider it as "economy class" seat.
Better seats with more space than ordinary seats. All Green Seats are reserved only. Consider it as "business class" seats.
Your seat is reserved and secured when you book your tickets. Head to the station with a peace of mind.
Seats are the same as Ordinary Seat.
Better seats and free blankets. Popular among Japanese business persons, executives and people who
Know as "First Class" of Shinkansen seats. Only available on Hokuriku and Tohoku Shinkansen lines.
You can take any open seats in unreserved cars of any train on the departure date. (No departure time will be indicated on your tickets.)
The best seat type if your priority is the cost and are traveling during less-crowded season/time.
For further information and photos, please visit official page at http://www.jreast.co.jp/e/ticket/types.html