going to japan, and trying to find the cheapest/best method of transportation, and i'm having conflicts with regard what's the cheapest way to get around japan:
we will be in tokyo from 3 - 12, kyoto from 12 - 16, osaka from 16 - 19, 20th we go back to tokyo and leave.
now, if we get a jr pass activate it from 12th, it will last to 18th, and wouldn't cover the trip back to tokyo for flight.
i have another friend that was just when to japan, he has it is probably cheaper to get a 7 day jr pass and then pay for osaka back to japan.
the friends i'm going with said that they calculated it, and it's cheaper to get the train tickets individually on the day of the trips.
who is right? it's really confusing with all the train lines, different types of trains, and their prices, so i'm hoping for someone who's dealt with this before for some insight.
or another alternative is to get a 14 day jr rail pass? i'm told that part of the jr line can be used in tokyo, so if take advantage of that during the our time in tokyo, it would be worth it?
we'll be staying in Roppongi, and will be within walking distance to tokyo tower or something.
The most expensive legs of your journey are the Tokyo-Kyoto shinkansen ride on the 12th and the Osaka-Kyoto regular train ride followed by the Kyoto-Tokyo shinkansen ride on the 20th. You can use the rail pass when you're in Tokyo, mostly to take the JR Yamanote line, but if you activate the 7 day pass on the 12th only for the shinkansen ride to Kyoto it's a waste because if you're staying in Kyoto central, none of the internal bus and train services there can be used with the rail pass. The rail pass can be used for the Kyoto-Osaka ride though, which is a measly 540 yen, compared to about 200 yen for a 2 stop ride on the Yamanote line in Tokyo.
My advice: If you REALLY want a rail pass, get a 7 day pass and activate it to cover most of the time in Tokyo and the shinkansen ride to Kyoto. You won't be traveling via JR in Kyoto and Osaka anyway. A 14 day pass won't cover both shinkansen rides unless you activate it specifically to do so, and if that's the case, paying for the individual shinkansen rides
might be cheaper.
So how to determine if you REALLY want a rail pass?
Use
this site to calculate the fares of each individual trip you want to be traveling daily for that time period that I'm advising, and see if the total cost adds up to more than the rail pass cost. That also means you'll need to have your full itinerary all planned and ready so you can get a good cost estimate. Also you'll need to consider that rail pass only works for JR lines, so you'll need to see which lines the site is recommending.
I tend to use the hyperdia site in conjunction with google maps, so that I can see how far the distance is from stations that are in close proximity but belonging to a different rail company that isn't JR. Also you'll need google maps so that you'll know exactly are the stations that you're looking up in hyperdia are.
edit: Ok I was bored and I took the liberty of doing some homework for you.
Note that Roppongi station doesn't even sit on a JR line.
Adult ordinary 7d rail pass costs: 28 300 yen
Shinkansen ride from Tokyo or Shinagawa station costs just under: 14 000 yen
So unless you're covering 2 shinkansen rides with your 7 day rail pass it's not going to be worth it.
If you really want a rail pass you could restructure your trip so that the day you land in Tokyo is the day you take the shinkansen all the way down to Kyoto. Within 7 days see Kyoto and Osaka (they're only 45 mins away from each other, you could literally stay in either city and visit the other). On the last day of validity of your pass take the shinkansen back up to Tokyo. That would be the best way to make use of a 7 day rail pass. But of course if you're not constrained by budget then by all means pay for each ride individually.