hanamiが完全に英語になるもいつかやってくるでしょう。今のところはflower viewing/party, cherry blossom party/viewingなどとりあえずこのような表現になりますが、Picnic under cherry blossomsと言っても正解です。
https://www.youtube.com/watch?v=k6FMirEv6A0 0:40 the cherry blossom viewing.
https://www.youtube.com/watch?v=Mh8JKjS6IIY 015 flower viewing party
https://www.youtube.com/watch?v=XmgsS_zUSwc 1:26 a lot of people enjoy a picnic under the cherry trees.
Fragile beauty of cherry blossoms appreciated across Korea
