if this is worth it

hi! we are arriving in Narita airport at 8:30PM and then our hotel is in Shinjuku. will i be able to use the JR pass from narita to shinjuku station at 8:30PM? because i think that tge JR pass ticket office is only open until 6pm?

Also, we are only planning in using the JR pass for the ff:
Narita-Shinjuku station one way
Tokyo- Kyoto
Kyoto- Tokyo

is it worth buying the 7 day pass for the above itenirary? Thank you