Fiasco trying to accommodate race venue (5)
I believe the answer is:
ascot
'race venue' is the definition.
'Ascot' can be an answer for 'race' (Ascot is a racecourse). I'm not certain of the 'venue' bit.
'fiasco trying to accommodate' is the wordplay.
'to accommodate' says the answer is hidden in the clue (I've seen 'accommodating' mean this).
'ASCOT' can be found hidden inside 'fiasco trying'.
Can you help me to learn more?
(Other definitions for ascot that I've seen before include "English course" , "English town" , "Society race meeting" , "Racecourse and cravat" , "Tie round the neck" .)