Celebrity Cruises   What You Need To Know All guests over the age of two, regardless of vaccination status will now be required to provide a negative COVID-19 test prior to boarding, for U.S. sailings departing August 6 through September 6, 2021. This test may be taken as either a PCR test or an Antigen test, conducted within 72 hours of embarkation.  Each guest is responsible for making their own arrangements with an accredited testing provider as well as all associated co