You can reserve seats in advance before your boarding with no extra charge at JR ticket offices.
With extra charge, you can travel first class (Green car).
The information on the voucher is not allowed to be changed.
Refunds for vouchers can be obtained at the place of issue within one year of the date of issue. The specified service fee and communication charges will be deducted from the refund amount. Refunds for rail passes can be obtained at the place of exchange prior to the starting date. A service fee corresponding to 20% of the price in Japanese yen stated on the rail pass concerned will be charged per rail pass. No refund is made for rail passes on or after the starting date.
If you lose your voucher it can not be reissued.