Holiday spot turned realistic once regulars leave (4)
I believe the answer is:
isle
'spot turned realistic once regulars leave' is the definition.
'isle' can be an answer for 'spot' (I have seen 'isolated spot' mean 'isle' so perhaps 'spot' could also mean 'isle'). I'm not sure about the 'turned realistic once regulars leave' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for isle that I've seen before include "Hawaii, perhaps" , "The Emerald - (Ireland)" , "Christmas or Easter, perhaps" , "what Donne implied he wasn't" , "This is sceptred!" .)