As of January 23, 2007, ALL U.S. citizens travelling by air between the United States and the Caribbean, Canada, Mexico, Central and South American, and Bermuda, will be required to present a valid passport.
On October 1, 2007, ALL U.S. Citizens traveling outside the United States by air will be required to present a valid passport to enter and depart from the United States; as the summer accommodation period has passed. All sectors of the Cayman Islands Department of Tourism have been working together this year with partners both locally and in the U.S. to make sure all travellers to Cayman - past, current and future - are conscious of the passport regulations.
That depends on where you live. If you live on Another Country than the Cayman islands, then yes you definitely do. If you live in the country, you most likely don't. In other groups of islands (like Hawaii or the Solomon Islands), the people can travel between each island without passports.
Apart from special cases eg. northern Ireland and Ireland, you need to have a passport to travel anywhere in the world, that is if you are leaving the country
yes
Yes
Yes, you would need a visa to travel to Cayman Island.
Passports are needed for most citizens to enter countries around the world. Irish nationals who are visiting Jamaica do not need a visa, but do need a passport to enter the country. Grand Cayman requires a passport and a visa if the trip is going to be beyond 10 days and its for business or 60 if you are on vacation. Mexico requires a passport and no visa if the visit is less then 180 days. Haiti requires a passport but no visa if trip is less then three months.
If you're traveling by plane, then yes. I'm not sure about cruise ships though.
No, the only time passports are shown is upon embarking and disembarking the the ship. When you get into ports you must show valid id to both get off and back on the ship.
no all you need is just your country passport
No. Australia is part of the British Commonwealth and so is Grand Cayman
If you are not a citizen of the EU you need a passport to enter Spain.
no you need a passport
Yes, they definitely need a passport to legally enter the United States.
Yes you need passport with visa to enter any other country.
Yup
Yes they do, just like they need a passport to enter any other country.