We are still trying to understand how this rail pass works and where and to what extent it can be used. According to the stipulation on Japan Rail Pass's website,
"The pass is not valid for “NOZOMI” and “MIZUHO” trains on the Tokaido, Sanyo and Kyushu Shinkansen lines."
http://www.japanrailpass.net/eng/en001.html
Are these the trains on the lines that would take us from Tokyo to Hiroshima, Hiroshima to Kyoto, and Kyoto to Tokyo?. We were considering the JR Rail Pass expressly for using it for these major legs of our trip, as well as anywhere else within those cities that we might be able to use it for transportation.
Thank you,
Okisan