Italy Travel late November-December

I am also interested in this information. I believe I have in hand what I need to get to Italy which is a negative COVID test within three days of travel and my vaccine card. I am assuming the CDC card will also be sufficient for trains, right?

I have some concern about returning to the US. Again we need the negative test, and we are leaving at 7:50am from Rome on December 27. The previous three days will be Christmas Eve, Christmas Day and the Sunday after Christmas. I am hoping we can find a testing station that is open!

In Sept., We carried the Emed BinaxNow covid monitored self-test with us and used it for the return to the US. It was quite easy. There is a wealth of info here regarding this test, so just use the Search feature on the Forum for additional info. It's an antigen test.
Safe travels.

This site from the Italian Government is a good place to start. https://infocovid.viaggiaresicuri.it/index_en.html

When we were there in Sept/Oct a CDC card was fine, although we did get the Green Pass which is an app on your phone that makes it easier. This article may be behind a paywall, not sure https://www.thelocal.it/20211006/update-what-visitors-need-to-know-about-getting-italys-covid-green-pass/.

We just got back from 2 weeks in Italy. Our CDC card was fine for getting into restaurants and museums. It was never an issue. There are lots of testing sites all over Rome (and at the airport) for when you come back. We just took the rapid antigen test at our local pharmacy prior to the trip and it was accepted.
This is a great time to be in Rome - the crowds are pretty much gone and it's not hot like summer. Prepare for rain, but it's not anything that should stop you from getting around, and dress in layers. We were able to easily enjoy the Trevi Fountain with only a small crowd - nothing like the hordes in summer. Likewise in Piazza Navona, we could get up close and study the fountains without being jostled by crowds. November is our new favorite time in Italy for that reason.

We just returned on the 14th from a 2 week trip. Were in the same cities you mention plus Naples. Check with your airline to see what they will accept. We'd planned on doing a proctored self-test but heard United Airlines wouldn't accept it. I called them and this was true. However, they would accept it for the return trip. We went to an urgent care near us for our test prior to leaving and got a rapid antigen test. Took BinaxNow self-tests with us for testing for our return. Set up the eMed account and downloaded the Navica app and did a trial run a week before leaving. That way we were familiar with the process. Used our cell phones to take the test in our hotel room while connected to the WiFi. Downloaded the results and emailed them to our hotel, who kindly printed it out for us. I can't recall a pharmacy we passed, while over there, that didn't have a sign saying they performed Covid tests. I think I heard it is around 20 euro to get it done. If you decide to take a self-test with you, be sure to pack it in your carry-on or personal bag. The BinaxNow test says it needs to be stored between certain temperatures, with the low end being about 36 degrees F. Cargo hold would ruin a test kit. I assume other self-test kits would have similar storage requirements.

As for crowds, they weren't bad. Venice was least crowded. Florence was busy but we were there on a Friday and Saturday. So there was a decent line at the Uffizzi and quite a few people inside. But not concerningly packed. In Rome, St. Peter's Square was nearly deserted the morning we were there. Trevi Fountain had a good crowd around it so we just put our masks on. Naples had a lot of people on the streets but the only thing we did indoors was the Archaeological Museum and we were about 5 people back when we arrived to buy tickets. Plenty of room to space out once inside. Capri was nearly deserted. Rome and Naples were starting to put up Christmas decorations.

Consider buying a clear plastic pouch/card holder for your CDC vaccine card. You will be pulling it out frequently.

Our CDC card worked in October at museums in Florence. We didn’t need it anywhere else.

To return, we had the United Self Covid tests but I recall pharmacies everywhere.

We’ve been traveling around Umbria for the last 4 weeks and every single restaurant has wanted to see our CDC card. We’ve also seen two different restaurants turn away people without them. Everybody puts on a mask to go anywhere indoors and the people who work indoors (with one exception) keep theirs on. It’s wonderful to see how little fuss is made about doing these simple things. Meanwhile, our home state has become one of the major covid hotspots.

Heading to Rome on Sunday—- it will be interesting to see what people do there.