Do I need to self isolate when returning from my cruise holiday? 03 December 2021 15:35 Updated For information on the UK traffic light system by country and in relation to returning before or after 30th November 2021, please see the government’s official site. Related articles Do I have to wear a mask? What happens if I am onboard and a country changes in the traffic light system? What are the latest changes in testing requirements for the US? Do I need to have the coronavirus vaccine to be able to cruise? Can I get off the cruise ship on my own?