YOU SAID:

come down to the party

INTO JAPANESE

パーティーに降りてくる

BACK INTO ENGLISH

Come down to the party

INTO JAPANESE

パーティーに来てください

BACK INTO ENGLISH

Come to the party

INTO JAPANESE

是非パーティーへおこし下さい。

BACK INTO ENGLISH

Do come to the party.

INTO JAPANESE

是非パーティーへおこし下さい。

BACK INTO ENGLISH

Do come to the party.