I'm a first time JR pass buyer, does the following itinerary justify for buying a 7 day JR Pass? And how many seat reservations can I make with this pass?
July 15 - Tokyo to Hiroshima for a half day tour
Hiroshima to Kokura
July 16 - Kokura to Hakata
July 21 - Hakata to Kansai Airport to catch a 4PM flight.