Agreed with brunos, I'd say Cathay's schedule is more flexible than most, as who knows what the HK Government may decide to do that lead to major changes of flights, al la the recent quarantine changes for Cathay.

If going stir crazy (who isn't!), personally I would:
1. Book a few alternative destinations (i.e. multiple flights, perhaps even with a few airlines), to avoid a country banning you or any travel (thinking of those who decided to ban all UK citizens)
2. Not book any non-refundable travel commitments (i.e. I'd get a few flexible hotels, not pre-pay any car hire or other things more substantial such as a big tourist event), or at least make sure that you could move a booking to a few years later if needed
3. Not book anything very important within 3 days of arrival/departure (to accommodate COVID tests, potential changes of flights +/- 2 days)
4. Have good travel insurance that covers COVID cancellations
5. Fly instead with Qatar, who are very reliable and don't seem to cancel flights very often, though you can't escape #1, they do offer a lot of flexibility with their paid tickets

Best case you may get more flexibility with your awards, perhaps really the worst case they may make you cancel, but seems fairly likely you'd get your cash or miles back for a fairly nominal fee at the moment.