YOU SAID:

I'm here for a good time, not for a long time.

INTO JAPANESE

私は長い間ではなく、良い時間ここにいます。

BACK INTO ENGLISH

I've been here for a good time, not for a long time.

INTO JAPANESE

私は長い間ではなく、良い時間ここにいました。

BACK INTO ENGLISH

I've been here for a good time, not for a long time.