Might be worth getting a more formal explanation from the club but I have heard a couple of details.
Due to access and egress the main stand is a red zone so noone can sit there due to players and staff from both teams entering here.
Season ticket holders will not be sitting in their own stand to stop temptation to go to normal seat so main stand season holders go to north, north season holders go to south.
If season tickets held at same home address in tier 1 then assumed family unit so given option to come together.
Draws will be rotated across season ticket population so at 300 a time once every 5 games?
Anyone got any other info.