First off, we had a fantastic cruise that at times was covid silly, but at the end of the cruise 100% of passengers and cruise guests tested negative. Masks worn at all times when moving about, but not eating or drinking.
Getting to Athens and through civic test at the pier had its challenges, but relax you are on vacation, just follow the rules and paperwork. We civic tested before we left home just to make sure and having that yes printed out was nice. You also need to fill out the EU PLF and have a print of that.
Food was the best I have ever had out of the 10+ cruises i have been on. Quality was on par with fine dinning and cocktails were excellent as well. Ports were the Greek Islands and Dubrovnik.