You did everything right. Right now, theoretically, no-one could be traveling with Paxlovid or Molnupilavir, just in case they get sick. Both medicines only have EUA and you need a positive COVID test to get a prescription filled in the US. Does anyone know if Celebrity can buy these antivirals? I do know that Greece and the rest of the EU also approved the use of Paxlovid a couple of months ago. What are the rules in the countries you are visiting? Maybe Celebrity can take the positive passengers that qualify for the treatment to a doctor ashore.
For those of you returning home from Italy, keep in mind that the rules might change, but right now people should travel with lots of home tests, I bought five for only $25 last week in COSTCO, If you have any symptoms, please don't think is allergies, test yourself. If you don't have any symptoms, start testing yourself two days before the last day of the cruise. If you or any member of your family tests positive then you have to make some decisions. After a friend of mine was taken to a COVID hotel after testing positive in Fiumicino, I really think that @bananavan made the right decision staying on the ship, our bilingual friend had a really hard time communicating with the personnel in charge at the airport when he tested positive. Please read the article linked at the end. Not my friend's story but similar.
@bananavan thanks for sharing your experience with us, hope your story helps Celebrity establish better protocols and your cruise critics family, prepare for a safer cruise experience. I really hope you test negative fast. Stay hydrated, take your vitamins and try to rest.
https://www.cbs8.com/article/news/health/coronavirus/carlsbad-woman-forced-quarantine-in-italy-after-testing-positive-covid/509-48466f0f-b20b-4d9e-9093-e60f4e9e7f28