Hello Daniel san.,
I would be travelling in Japan next year for 12 days and i will use 7 day JR Pass and i'll plan to use ICOCA card too because i'll be in Osaka for 5 days, in Hakone for 6 days and 2 day in Nagoya.
This is my itinerary.
Day 1 : arrival in Chubu Centrair and then go to Osaka
Day 2 : Kurashiki and Himeji
Day 3 : Kyoto
Day 4 : Kobe
Day 5 : Osaka
(Can i buy ICOCA card in Nagoya Chubu Centrair International Airport ? or i must buy in Osaka Kansai Airport ? Can i used ICOCA card From day 1 to day 5 ?)
From day 6 i will used JR Pass..,
Day 6 : Hakone
Day 7 : Kanazawa
Day 8 : Nagano
Day 9 : Yokohama and Odaiba
Day 10 : Tokyo
Day 11 : Nagoya
Day 12 : Chubu Centrair and go back to my country
Thank you.