I am scheduled to go on a 20 day cruise in South America on Oceania this month. I am trying to learn how COVID-19 has been affecting cruises in the last few weeks. Are passengers who test positive being quarantined on board or forced to disembark? Are ports and excursions being cancelled? It is so hard to know what the right thing to do is given how little information is coming out other than the CDC's recommendation not to sail.