The wealthier people on the west coast go to Hawaii or Tahiti (or other south Pacific Islands) and others go to Mexico. It takes so long to get to the Caribbean that it is often not worth it. Most of the interesting islands (such as Aruba, St. Maarten, St. Thomas) take 2 or 3 flights and at least 10 hours to get to today. Mexico and Hawaii are a straight shot, and in general are just as nice (and expensive). Of course there are many exceptions, but it is more about proximity and convenience to those that travel.
If you have never designed an airplane part before, let the real designers do the work!