It's relaxed, with 'ace' fare? (9)
I believe the answer is:
cafeteria
'it's relaxed with ace fare?' is the definition.
I can't judge whether this defines the answer.
'it's relaxed with ace fare?' is the wordplay.
'relaxed with' indicates anagramming the letters.
'ace'+'fare'='acefare'
'it' anagrammed with 'acefare' can make 'CAFETERIA'.
Can you help me to learn more?
(Other definitions for cafeteria that I've seen before include "where food can be picked up" , "Where one scoffs" , "greasy spoon?" , "Self-service restaurant" , "eating-place" .)