YOU SAID:

y'all gonna go to the party?

INTO JAPANESE

みんなパーティーに行くつもりですか？

BACK INTO ENGLISH

Are you all going to the party?

INTO JAPANESE

皆さんはパーティーに行きますか？

BACK INTO ENGLISH

Are you going to a party?

INTO JAPANESE

パーティーに行きますか？

BACK INTO ENGLISH

Are you going to a party?