Ordinary reserved: the everyday choice
A reserved Ordinary ticket gives you a seat on the stated train after ticketing. Many Tokaido and Sanyo trainsets use a 2+3 layout; layouts on other lines and trainsets differ. Choose this for a predictable place to sit and the broadest range of departures. Party seating, window and aisle preferences depend on the remaining inventory.
Green Car: space and a quieter setting
Green Car is the first-class option on trains that provide it, often with a 2+2 layout and more room. The upgrade is mainly about seating comfort; do not assume meals, a lounge or priority boarding are included. Compare the fare difference for your whole group before choosing.
GranClass: offered on selected services
GranClass is a separate premium product found on selected trains, including some services on the Hokuriku and Tohoku networks. It is not a standard option on the Tokyo–Kyoto Tokaido route. Catering and attendant service depend on the train, so the name alone does not establish what is included.
Unreserved does not mean any train, any time
An unreserved product may allow seating in designated cars under its own conditions. It does not reserve a place, and a busy train may mean standing. Some services are all-reserved and some holiday periods change normal arrangements. Check the permitted date, train category and cars before boarding.
Windows, Mt. Fuji and bags
On the Tokaido route, Mt. Fuji is generally on the right travelling from Tokyo towards Kyoto and on the left in the reverse direction. Seat letters vary with the layout; a request is not a guarantee, and cloud can hide the mountain. If you need oversized-baggage space, select an eligible fare and request the luggage arrangement separately.