Hi. My itinerary as follows:
Day 1 : Arrive Nagoya
Day 2 : Toyota Plant tour & Korankei Autumn Leaves
Day 3 : Nagoya-Takayama-Nagoya
Day 4: Nagoya-Osaka
Day 5: Osaka-Kyota-Osaka
Day 6 : Osaka-Hiroshima-Osaka
Day 7 : Universal Studios Osaka
Day 8: Osaka
Day 9: Osaka-Karuizawa
Day 10: Karuizawa
Day 11: Karuizawa-Tokyo
Day 12: Tokyo
Day 13: Tokyo-Yokohama-Tokyo
Day 14: Tokyo (may be Nikko)
Day 15: Tokyo
Day 16: Depart Tokyo
Should I buy a 7-day JR pass to cover Day 3 to Day 9 and pay single trips fare for the rest of the trips (I will skip Nikko if I do this)?
Or, should I buy a 14-day JR pass to cover Day 3 to Day 15 (I will include Nikko if I do this)?
Thank you.