Get full details of a marina, anchorage or bay by ID: description, amenities, contact, boat count and cheapest day rate, PLUS what only we know from tracked AIS traffic — how busy it is in each month of the year, how boats use it (share of overnight visits, typical day-stop length, what time it fills up), whether it is a hidden gem, the places boats actually sail to from there, most-travelled first with the share of the tracked trips each one takes and an estimated passage time, and the nearest bookable base for a spot with no fleet of its own. Use when the user is viewing or asks about a specific place, asks when it is quiet, or asks where to go next from one. Busyness compares a place to its own peak month, never to another place.