Figure on the Colregs applying. And when I went years ago, the 'chart' we were given doubled as a placemat, and the main 'navigation' tool was a 3-ring binder with ariel photos showing where to anchor.
Real chart work seems to be a foreign concept. They chuckled to learn I'd brought a full set of paper charts from Boston (St Thomas through Virgin Gorda area).
Nav aids are few, and it's *dark* out there at night, and gets dark real quick after sunset, too. So get into harbor while it's still light, so you can see the depths in the clear water, and the land in the clear visibility.