Chris Mann of Tropical Imaging lives on the Turks and Caicos Islands and has this to say about beach weddings.

It’s worth taking some time to choose this carefully. Getting married in front of the hotel or resort at which you are staying is the most convenient, but bear in mind that the beach may be crowded and there will most likely be onlookers watching the ceremony. They also may appear in the background of your wedding photographs!

Mr. Mann also goes on to say this about the timing of your perfectly planned beach ceremony,

Generally, the optimum time is about an hour to an hour and a half before sunset, for a number of reasons. Earlier times may be too hot to be comfortable when the sun is strong and high. This can make it hard to avoid squinting and creating hard, unflattering shadows. The “golden hour” when the sun is low and the day has cooled a little, is the preferred time for beach photography.

Read more about planning a beach wedding.