Originally Posted by
cxfan1960
Standby staff travel can reduce op-up chance for other passengers:
* I was on a HKG-SFO flight about 4 years ago. J was quite open. Suddenly it showed J0 C0 D0 I0. I thought I had a chance to get an op-up to F. In the end, CX's COO took the F, and I stayed in J with about 20 CX staff members

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* CX's own ID travelers can also travel in any available cabins.
It depends on the seniority not everyone is like the COO and not every staff is eligible to premium cabins