question about the usage of 返 (Cantonese)
番


[5] [粵] [adv] back; again; afresh.

放幾日假 = take a few days off
Depend on context
放番幾日假 (1) = take a few days off again
Similar example: 一年冇返工，而家返番 = A year without going to work, now I am going (to work) again
放番幾日假 (2) = take a few days off back (for compensation)
Similar example: 舊年冇去旅遊，今年要去番次 = Didn't travel last year, have to travel one time back (for compensation) this year

返


return; come/go back