Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
You can see AA's schedules from GCM to ANU at aa.com.
Many Caribbean nations have high airport taxes as tourism is their primary source of revenue.
All persons arriving the U.S. from another country must clear U.S. immigration and customs, even if merely connecting to a second foreign country.