YOU SAID:

maybe we could go to subway to get a few drinks and a sandwich

INTO JAPANESE

地下鉄に行って飲み物とサンドイッチを買うかもしれない

BACK INTO ENGLISH

You might go to the subway and buy drinks and sandwiches

INTO JAPANESE

地下鉄に行って飲み物やサンドイッチを買うかもしれません

BACK INTO ENGLISH

You might go to the subway and buy drinks and sandwiches