I'm thinking of traveling to Japan with my 2 kids (2 years old and 1 year old):
1) Is the JR pass good for Narita airport -> Tokyo -> Fujiyoshida Yamanashi -> Yokohama -> Osaka -> Nara -> Kyoto?
2) Is the children pass the same price as adult?
3) We are going to be there for 12 days, should I get the 14 days pass or 7 days and add the the extra trips separately?