5star.
That is what is already happening. (Not EK but neighbour).
Had my last OPC starting the briefing at 4am
It went OK. The end of day 2 tough (same timings) I was dying in there.
Trying to see the positive side it does mimic 90% of our operation. So maybe it is not that bad? PLUS the checker is in the same sad state as you are
Cheers and keep surviving!