Kilo-club,
all you can expect is the minimum time off, the day off pattern varies depending on the length of trip. 4 day trip normally has a minimum of 3 days off, 3 day trip normally has a minimum of 2 days off. These are minimum times off, with a 750 hr limit for the year you can normally expect more. This month 5 trips, 3 of them with 2 days off in between and I commute. No extra time is given to facilitate travel it is up to you to be there on time and suitably rested. The minimum time off between trips is not the norm, unless you are well behind on hours or there is a rostering cock-up!!