YSW: I may not have SAID it, but that doesn't mean to say.........
See a NOTAM from 1/5 - does it suggest that non-pre-planned closures at ABZ are a thing of the past, or does it mean they are now in place? I read it both ways so not sure.
I though overnight cover was due to be upgraded.
Assume breaks are to give the night man a rest from being on station, especially if there's not much to wait for at certain times of the night.