Receiving bonus regularly, book one holiday camp (7)
I believe the answer is:
bivouac
'camp' is the definition.
('bivouac' can be a synonym of 'camp')
'receiving bonus regularly book one holiday' is the wordplay.
'receiving' is an insertion indicator.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'book' becomes 'b'.
'one' becomes 'i' (Roman numeral).
'holiday' becomes 'vac' (abbreviation for vacation).
The alternate letters of 'bonus' are 'ou'.
'b'+'i'+'vac'='bivac'
'ou' put into 'bivac' is 'BIVOUAC'.
(Other definitions for bivouac that I've seen before include "A temporary army camp" , "Pass the night in the open air" , "Temporary camp without tents or cover" , "Encamp" , "Temporary and basic encampment" .)