I honestly don’t know but everything was “open” outside. They were very strict about showing proof of vaccination to gain entry to restaurants.

I would first say, please don’t travel at this time! There are too many variables with this virus and the unknown. That being said: If you travel in September 2021 (😀) you will find many local ferries available to take you to different parts of Italy. There are a lot of local trips that can booked up once you are there. TripAdvisor and Expedia have excellent prices. I highly recommend Hop On Hop off busses in each area. You can travel via train or bus rather inexpensive. Please reconsider postponing your trip- er on the side of caution

There many alternatives for a lovely boat trip on Amalfi Coast. I would recommend a full day trip to view the whole coast. Next you can choose to have a combined boat- bus trip as well to see some lovely places which not located on the shore, such as Ravello.

Yes, Munich Airport has "Gepäckaufbewahrung" i.e. left luggage facility. Just ask the airport staff about its exact location. You can reach the city hall (Marienplatz) by S-Bahn directly. Takes roughly a little more than an hour, so far as I remember.

Hello, I stayed at the Europaischer Hof across the Main Station, Hauptbahnhof. Many hotels around the area. Due to the proximity of the station and the comparisons, the rates are very competetive. This place was really nice (adults only) and a short walk to Marienplatz Square...about 7 - 10 mins walk, straight. Make a right once you exit the hotel and keep walking. Take the escalators down when you reach it and the the escalators up at the other end and then keep walking. Keep in mind that everything is closed on Sundays. I took advantage of the walking tours at Marienplatz and have found them to be very informative. After the first walking tour, I realized that it I was in the heart of everything, something that you are also looking for.

I dint fully understand your question. It’s an area of Munich with open streets and shops, restaurants, cathedrals, and more. Enjoy.

Loads of restaurants nearby! Christmas dinner I am not sure.

Hofbrauhaus is really close by to Marienplatz a few blocks in easy walking distance. I recommend you see the beer stein locker room on the 1st floor (really neat) and the upstairs hall (historical site) at Hofbrauhaus during your visit.

So sorry, I booked my transfers via internet therefore I have no clue about the trains. What about checking the Munich trains on line?

I took Uber but there is a great app for public transit. I think it's MVG app "Fahrinfo".