Quantum: No Solace?

There is a rather sad story of Royal Caribbean's cruise ship, Quantum, having to cancel its cruise 'to nowhere' (https://www.theguardian.com/world/2020/dec/09/singapore-cruise-to-nowhere-ends-after-passenger-tests-positive-for-covid-19). The scheduled 'safe' cruise was limited to residents of the city state of Singapore. The plan was that it would make no stops and stay within Singapore's waters. Unfortunately, one passenger tested positive for Covid-19 and the whole thing had to be cancelled. I suppose that an unconsidered benefit is that one shipping contribution to 'greenhouse gas' emissions will not, now, occur.