I got to experience some things that I could never experience living in Japan.
The biggest merit of living abroad was seeing and doing things that I couldn't do in Japan.
ーI got to experience some things that I could never experience living in Japan.
「日本に住んでいたら経験することができないことを経験できた」
to get to experience ... で「…を経験することができる」
ーThe biggest merit of living abroad was seeing and doing things that I couldn't do in Japan.
「海外に住む一番のメリットは、日本ではできないことを見たりやったりできることです」
the biggest merit で「一番のメリット」
ご参考まで!