Holiday area where I arrive in disarray (7)
I believe the answer is:
riviera
'holiday area' is the definition.
(I've seen this before)
'i arrive in disarray' is the wordplay.
'in disarray' indicates an anagram.
'i'+'arrive'='iarrive'
'iarrive' is an anagram of 'RIVIERA'.
'where' is the link.
(Other definitions for riviera that I've seen before include "Warm coastal region" , "I arrive at southern resort area in France" , "French/Italian Med. coast" , "Coastal region between Cannes and La Spezia" , "Nice location" .)