Pointed remarks about a party island (8)
I believe the answer is:
barbados
'island' is the definition.
(island nation)
'pointed remarks about a party' is the wordplay.
'pointed remarks' becomes 'barbs' (barb can mean a hurtful comment).
'about' is an insertion indicator.
'party' becomes 'do' (do is a kind of party).
'a'+'do'='ado'
'barbs' enclosing 'ado' is 'BARBADOS'.
(Other definitions for barbados that I've seen before include "Caribbean country" , "Bridgetown is its capital city" , "Island in West Indies, capital Bridgetown" , "part of Caribbean" , "Caribbean location" .)