Hope this helps
The 6 on 3 off has been in force for a couple of years now. Depends on which base you are, but they are so short staffed these days and with yet more expansion, you tend to fly all 6 days. It is a mix and match roster. One day 5am report, next day could be 8.20pm report. They do mess your lives around a bit!!
The leave is in 5 blocks of 7 days. One block consists of 7 days with 3 days off one side, and 2 days off the other, so you end up with 12 days. 2 blocks in the summer, 3 blocks in winter.
Never used to have much in way of staff travel but its getting better. Confirmed seats, You and one other named person. Only on the easyJet network No other airlines available for travel.
You can have 50%, 75% rosters, but doesnt make much differece, they'll only cram the same amount of sectors in as you would have on a normal roster!
You can plan your life as you have a stable 6 on 3 off pattern.