Roster
The friends of friends have no idea. These days the published roster is issued and you then have the ability to swap shifts if you can find someone to do it with and it meets rostering and fatigue guidelines. Unallocated shifts (not enough staff to carry the roster) are up for grabs to swap with, again subject to the rules. Straight from the college to Sydney Tower has happened but the trainee needs to have demonstrated ability in the simulator, generally above his course mates. This ability will need to be confirmed, probably, by a Sydney Tower checker. On arriving in Sydney Tower it will be at least 2 years til you could expect full ratings and then night shifts. If you really don't like night shifts then I have to say maybe this isn't for you cause they are a fact of life for most ATC. Maybe you should be looking at a regional or Metro D Tower that is non continuous ( no nights).