I don't know the answer to your question, but if you are planning on staying in the airport the whole time, the two issues that come up (and which you may already know about) are, (1) the only one-world lounges open 24 hours are SATS (not very good) and Marhaba, and (2) Cathay leaves from Terminal 4, which is a long way from Terminals 1, 2, and 3 (which are a relatively easy walk from each other air-side).