We're out to get in for a drink (4)
I believe the answer is:
wine
'for a drink' is the definition.
(wine is an alcoholic drink)
'we're out to get' is the wordplay.
I cannot really understand how this works, but
'get' could be 'win' (winning is a kind of getting) and 'win' is present in the answer.
A single letter 'e' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'in' is the link.
Can you help me to learn more?
(Other definitions for wine that I've seen before include "Accompaniment for women and song?" , "Colour" , "Plonk" , "an answer to all clues, initially" , "Beaujolais, for example" .)