It does not work on the Kesei SkyTree line Here "Kesei SkyTree line" may refer to Keisei Narita SKY ACCESS Line.
(Skytree Line is operated by Tobu, not Keisei.)
will need to ride subway to Tokyo or Shinagawa Subway does not lead to Shinagawa Station (of JR or of Keikyu).
I found a 21:44 NRT going to Shinjuku using Hyperdia. JR companies may revise train timetables (for major sections)
on the 9th or the 16th (Saturday) of March 2019.
Train time for March 2019 by route finding tools such as HyperDia
may be currently unreliable.
mactoolsix:
Staying near Shinjuku Gyoen in Tokyo Which side of Shinjuku Gyoen National Garden is your accommodation?
Is that a hotel?
Arriving into NRT late at night,
you may not catch a JR Narita Express [NEX] train.
To Shinjuku-gyoemmae Station (M-10),
which is north next to Shinjuku Gyoen,
you can take the following route.
One possible demerit of choosing this station is
that you have to use at least one staircase to go out to the ground.
Narita Airport (Terminal 3 / 2 / 1) bus stop
: Departing by 22:05 / 22:15 / 22:20
http://accessnarita.jp/en/home/#timetable-title-3386| The Access Narita Bus
| : 1000 yen, 1 and a half to 2 hours
Ginza Station bus stop
| Short walking
https://www.tokyometro.jp/station/yardmap_img/_station_%E9%8A%80%E5%BA...Entrance (equipped with elevator) between C5 and C7:
Ginza Station (M-16)
: Track 3
| Tokyo Metro Marunouchi Line
| : 165 yen (paid with Suica or PASMO)
http://www.tokyometro.jp/station/yardmap_img/figure_yardmap_shinjuku-g...Track 1:
(M-10) Shinjuku-gyoemmae Station.