Yes, U.S. citizens need a passport or other WHTI compliant document to go to the Cayman Islands. The Cayman Islands are part of the Caribbean region and falls under the Western Hemisphere Travel Initiative that went into full effect on June 1, 2009.
If you're traveling by plane, then yes. I'm not sure about cruise ships though.
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.
I don't know why this is under the Cayman Island's category as the 3 islands that make them up are no where near the Bahamas.
No. Australia is part of the British Commonwealth and so is Grand Cayman
This is highly subjective as the Condos in the Cayman Islands cater to a diverse set of tastes and interests. The best known are possibly the residences at the Ritz Carlton Grand Cayman. Prices can range from quite expensive to very affordable. The list is really quite exhaustive. For a more specific answer the particular set of attributes which are sought would need to be known.
for short term no but you do need a passport for short term no but you do need a passport
I think Turkey and Malta, check the embassy websites for these countries. Also the other Caribbean Islands except Dom Republic and Cayman.
No. You'll need to convert your Cayman currency into USD, however, US Dollars can be spent in Cayman.
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.
Yup
Yes you do, source:: I travelled to cayman in july 2011