My wife and i are going to Grand Cayman for the first time this coming August. I am an American Citizen and my wife is a Permanent Resident of the United States (Greencard holder) currently applying for her U.S. Citizenship, but she is not a U.S. Citizen yet. She is a citizen of China and has a valid Chinese Passport but lives and works in the US for the past 7 years. Is the greencard and Chinese passport enough for her to enter into the Cayman Islands?