YOU SAID:

Tonight we are going to party like in 1699

INTO JAPANESE

1699 年のようなパーティーに今夜します。

BACK INTO ENGLISH

In 1699 as a party tonight.

INTO JAPANESE

今夜のパーティーとして 1699。

BACK INTO ENGLISH

Tonight's Party was 1699.

INTO JAPANESE

今夜のパーティーは、1699 だった。

BACK INTO ENGLISH

Tonight's Party was 1699.