Wild drinking spree (6)
I believe the answer is:
bender
'wild drinking spree' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bender that I've seen before include "Non-stop drinking" , "Booze-up" , "Binge on drinks" , "many a joint, maybe" , "An informal drinking bout, leaves one twisted" .)