Refrain from taking holiday without other people? (5,5)
I believe the answer is:
leave alone
'refrain from taking' is the definition.
(leaving something where it is)
'holiday without other people?' is the wordplay.
'holiday' becomes 'leave' (I've seen this before).
'without other people?' becomes 'alone' (alone means without others).
'leave'+'alone'='LEAVE ALONE'
(Other definitions for leave alone that I've seen before include "Abandon" , "Do not disturb" .)