Book trendy holiday resort? (8)
I believe the answer is:
brighton
'holiday resort?' is the definition.
'brighton' can be an answer for 'resort?' (seaside resort). I am not sure about the 'holiday' bit.
'book trendy' is the wordplay.
'book' becomes 'b' (abbreviation for book).
'trendy' becomes 'right-on' (both can mean fashionably progressive).
'b'+'righton'='BRIGHTON'
Can you help me to learn more?
(Other definitions for brighton that I've seen before include "Sussex seaside resort" , "resort town" , "... hard cylindrical sweet from the seaside" , "Sussex city (with Hove)" , "South coast city combined with Hove" .)