If you haven't reserved a seat on the Nozomi during peak periods, you might find yourself standing or unable to board your desired train.

Standing in the deck area of ordinary cars is possible with an unreserved ticket, however, it's not guaranteed, especially during the congested year-end and New Year period.

Japan Rail Pass holders ought to take notice of this change as well.

While Hikari and Kodama Shinkansen will be unaffected and will continue to offer unreserved seats, travelers can expect trains to be very full during the New Year season from the end of December through the beginning of January.

For this reason, to avoid inconvenience, JR Pass holders are recommended to reserve their seats as well.

To ensure a comfortable and hassle-free journey on the Shinkansen, especially during the busy year-end and New Year holidays, early reservation is key. Keep in mind the changes to the Nozomi service and choose your travel dates wisely to avoid the rush.