YOU SAID:

Their party was fun for all.

INTO JAPANESE

彼らの党すべて楽しかったです。

BACK INTO ENGLISH

All their party was fun.

INTO JAPANESE

彼らのパーティーはすべて楽しかったです。

BACK INTO ENGLISH

Their party was all fun.

INTO JAPANESE

彼らのパーティーはとても楽しかったです。

BACK INTO ENGLISH

Their party was a lot of fun.

INTO JAPANESE

彼らのパーティーはとても楽しかったです。

BACK INTO ENGLISH

Their party was a lot of fun.