Character seen with drink — John Lennon for one (7)
I believe the answer is:
airport
'john lennon for one' is the definition.
(John Lennon is an airport in Liverpool)
'character seen with drink' is the wordplay.
'character' becomes 'air' (air can mean a character or mood).
'seen with' means one lot of letters go next to another.
'drink' becomes 'port' (port is a kind of drink).
'air'+'port'='AIRPORT'
(Other definitions for airport that I've seen before include "plane where it lands" , "passenger terminal" , "Aerodrome" , "Place for planes" , "Eg, Orly, Schiphol" .)