JRパス

Hi there,

While I cannot guarantee you'll be able to reserve your seats I have never had problems with reserving seats on the Tokyo > Kyoto bullet trains. Actually when I turn up at the station and have usually been able to make a reservation for the next train, so I imagine that if you are reserving 2 days in advance you should be fine.

The Obon festival around the 15th of August shouldn't affect you by the 22nd, so it should be plain sailing as far as ticket reservations go.

Please note that normal rules apply to the trains in Japan as everywhere - rush hours (7-9am and 5-6pm) are busier so it's be best if you can avoid these times if possible.

Hope this helps!