The rates adjusted in drama venues (8)
I believe the answer is:
theatres
'drama venues' is the definition.
(I've seen this before)
'the rates adjusted' is the wordplay.
'adjusted' indicates anagramming the letters.
'rates' with letters rearranged gives 'atres'.
'the'+'atres'='THEATRES'
'in' is the link.
(Other definitions for theatres that I've seen before include "Scenes of important events, like playhouses" , "Areas of operations" , "Lecture rooms with seats rising in tiers" , "operational locations" , "Performance arenas" .)