Gets ready for some couples (6)
I believe the answer is:
braces
I believe this clue is a double definition.
'gets ready' is the first definition.
(bracing is a kind of getting ready)
'some couples' is the second definition.
('brace' can be a synonym of 'couple')
'for' acts as a link.
(Other definitions for braces that I've seen before include "More than one couple" , "Appliances to correct dental irregularities" , "Props or trouser-supporters" , "bolsters" , "They hold up men's trousers" .)