centexwes - 6/5/2022 11:02 John, wife and I returned yesterday from a Danube river cruise. They required everyone to be vaccinated and have a preflight Covid test. In addition, we were tested upon boarding the boat and then the next three days. A total of 11 couples tested positive and were removed from the ship and put into a hotel in Vienna to quarantine for 5 days. Ruined their trips. Masks are required for everyone on board ship unless seated for dinner. Off ship, mask mandates have been mostly dropped. We wore them on the subway in Munich. In addition, a negative Covid test is required to fly back to the US.