Cremated seaman scattered round posh place with slot machines (9,6)
I believe the answer is:
amusement arcade
'place with slot machines' is the definition.
'cremated seaman scattered round posh' is the wordplay.
'scattered' indicates an anagram.
'round' indicates putting letters inside.
'posh' becomes 'u' (abbreviation for upper-class - opposite to non-u).
'cremated'+'seaman'='crematedseaman'
'crematedseaman' anagrammed gives 'amsementarcade'.
'amsementarcade' going around 'u' is 'AMUSEMENT ARCADE'.
(Other definitions for amusement arcade that I've seen before include "Where to find games machines" , "gambling joint" , "gambling haunt" , "kids might have fun here" .)