YOU SAID:

if we had a party what should we drink at three thirty too?

INTO JAPANESE

もし私たちがパーティーをするなら、私たちは3時半にも何を飲みますか?

BACK INTO ENGLISH

If we were having a party, what would we drink at 3:30?

INTO JAPANESE

もし私たちがパーティーを開くとしたら、3:30 に何を飲みますか?

BACK INTO ENGLISH

If we were having a party, what would we drink at 3:30?