YOU SAID:

the party wont stop to grandpa dave walks in

INTO JAPANESE

デイブおじいさんが入ってくるまでパーティーは止まらない

BACK INTO ENGLISH

The party won't stop until Grandpa Dave comes in

INTO JAPANESE

デイブおじいさんが来るまでパーティーは止まらない

BACK INTO ENGLISH

The party won't stop until Grandpa Dave comes

INTO JAPANESE

デイブおじいさんが来るまでパーティーは止まらない

BACK INTO ENGLISH

The party won't stop until Grandpa Dave comes