And yet again the rules have changed today , 22 Aug, in our favour. As we are vaccinated and boosted ie "up to date" in Celebrity lingo, and travelling ex Barcelona for 9 nights with no Greek ports the following applies (and both the UK & US websites match):
Up-to-Date Guests*:
For all sailings 9 nights or less, no pre-boarding testing is required.
For all sailings 10 nights or longer, guests ages 12 and up must present a negative COVID-19 test result from either an antigen test result taken within 1 day prior to sailing or a negative PCR test result taken within 3 days prior to sailing