Would it be a good idea to get a covid test a month or so before your cruise even if you have no symptoms? DCL acknowledges that the test at the port can pick up an old virus from as far back as 90 days. If you’ve had covid and recovered, you can get a letter from a doctor indicating that you’re recovered and safe to cruise. So why not get a test, just in case you’ve had covid without symptoms? Wouldn’t it be better to know before arriving at the port?