If you are not into the bright lights and crowds of most destinations that cater to gays you may want to consider Turks and Caicos. The islands offer picturesque views and relaxed attitudes.
There is some gay activity. Providenciales seems to be the hub for gay or gay-friendly activity. There is said to be a Dominican nightclub there with a liberal crowd.
Attitudes may be conservative in these islands, but homosexuality was decriminalized a few years ago by order of the British government.
Read comments from an insider about being gay in Turks and Caicos.
Carnival is also a great spectacle here.