YOU SAID:
Let go get some drinks
INTO JAPANESE
飲み物を取りに行こう
BACK INTO ENGLISH
let's go get a drink
INTO JAPANESE
飲みに行きましょう
BACK INTO ENGLISH
let's go drink
INTO JAPANESE
飲みに行こう
BACK INTO ENGLISH
Let's go for a drink
INTO JAPANESE
飲みに行こう
BACK INTO ENGLISH
Let's go for a drink
That didn't even make that much sense in English.