I have the following itinerary planned:
14 Dec 2016: Tokyo to Kyoto
16 Dec 2016: Kyoto to Tokyo
20 Dec 2016: Tokyo to Karuizawa
24 Dec 2016: Karuizawa to Tokyo
Initially I thought of purchasing individual tickets.
Would it be better to purchase a 7-day JR Pass to cover 14 Dec to 20 Dec, and purchase a 1-way ticket from Karuizawa back to Tokyo on 24 Dec. I suppose JR pass can also be used when I am around Tokyo (16-19 Dec) to move around using JR trains.
Any advice is much appreciated.