The fixed rate for a place of entertainment (7)
I believe the answer is:
theatre
'place of entertainment' is the definition.
(I've seen this before)
'the fixed rate' is the wordplay.
'fixed' indicates anagramming the letters.
'rate' is an anagram of 'atre'.
'the'+'atre'='THEATRE'
'for a' is the link.
(Other definitions for theatre that I've seen before include "The rate (anag.)" , "Room for surgery" , "(Lecture) room" , "Operating area" , "Scene of operations or dramatic performances" .)