YOU SAID:
Yesterday I went to tomorrow’s concert location to see what we needed to prepare today
INTO JAPANESE
昨日は明日のコンサートの場所に行って、今日の準備に必要なものを見に行った。
BACK INTO ENGLISH
Yesterday I went to the concert place tomorrow to see what I needed to prepare for today.
INTO JAPANESE
昨日は明日コンサートの場所に行って、今日の準備が必要なものを見に行った。
BACK INTO ENGLISH
Yesterday I went to the concert place tomorrow to see what I needed to prepare for today.
That didn't even make that much sense in English.