We will be in Japan next month and we will have a JR Train Pass for our travels. We intend to make reservations for all our train travel which will include Tokyo to Takayama, then to Kanazawa, then Hiroshima, then Okayama and finally to Kyoto. We plan to do all reservations when we arrive in Tokyo from Australia.
If we book say for example Okayama to Kyoto departing at 10.30am but we decide we would like to stay in Okayama for a few more hours, is it permissible to cancel the 10.30 reservation and make a new reservation for 4.00pm using our JR Pass.
Thanks for any assistance.