Hello,
I am wondering if I should buy either a 7 day JR pass or one for 14 days. I arrive in Fukuoka on the 1st of August. From there, I will travel with a friend of mine to Osaka, where he will take a flight to Tokyo on the 12th. However, I think I want to see the temples in Yamagata first before I go to Tokyo myself. However, I want to be in Tokyo on the 15th or 16th. What should I do and how should I do it? (secondly, is it worthwhile to go to Yamagata (Yama-dera)?)