У меня знакомые бронировали со штатовским биллингом, но на сайте у них написано следующее:
5. Can I use a foreign credit card to book my reservation?
Yes, absolutely! The website will not accept cards with billing addresses other than the U.S., Canada or the United Kingdom. Outside of those areas, you can speak with one of our Caribbean Consultants to use a card from another region by calling #800-915-2322.
http://www.cheapcaribbean.com/faq.jsp