Steps taken by Cubans having drink at pub reduced (5)
I believe the answer is:
rumba
'steps taken by cubans' is the definition.
(Cuban dance)
'drink at pub reduced' is the wordplay.
'drink' becomes 'rum' (rum is a kind of drink).
'at' is a charade indicator (letters next to each other).
'pub' becomes 'bar' (both are drinking establishments).
'reduced' means to remove the last letter.
'bar' with its last letter taken away is 'ba'.
'rum'+'ba'='RUMBA'
'having' acts as a link.
(Other definitions for rumba that I've seen before include "one's on the floor for it" , "Latin beat" , "Ballroom dance of Cuban origin" , "Cuban folk-dance" , "Dance originating in Cuba" .)