The CCSA briefing yesterday gave some clues. https://www.facebook.com/nbtworld/vi...60439061329793

Reading the top left corner of the slide and listening to the commentary, it seems 6 documents will be required to get the pass.
So from memory, that's about the same number of documents as required for the COE.

So perhaps flight booking is not needed ?

The reference to ASQ/SHA booking makes it look rather like the "Quarantine Free" travel might actually be "Quarantine or Restrictions Until Covid Test is Passed".
Which is not Quarantine Free, but a hell of a lot better than previously.

That would be a missed opportunity, as it would be much more attractive to offer rapid PCR tests.
Or better still, for popular tourist origin countries, have an "approved" test service to swab all the passengers before boarding, so the results are ready before arrival.