There is now only a light powered by a solar panel that is still operational. G figured out that the odd structure in front of the light used to house an upright propane tank that powered the light. We could peek through the rusted metal door and see the propane tank inside.
We were uncertain about the function of a building that used to stand next to the lighthouse. All that remains are three sides and a floor. But if you look really closely toward the right side of the photo, you can see the Emerald Princess at anchor by Princess Cays.