5d: Visit to The Skull
Those going on the Vultan up to The Skull should post here.
As it turns out, there is a shuttle that travels between The Skull and the Downport, but it doesn't have a regular schedule--it makes the trip (either direction) when there's enough passengers (unspecified how many that is), when sufficient fees are paid, or when the pilot feels like it... usually some combination of the three.
Heading up to the moon, it's easy to see that the Highport started as merely a refueling depot for ships and then gradually expanded outward, upward, and downward to become a full Class A starport. While there are six external docking bays open to the vacuum of space, presumably these are for special cases and overflow... probably carry-overs from the original refueling depot. A dozen internal docking bays now encircle the central hub.
The Vultan has been assigned one of those internal bays. There's no way, though, to tell from space how many are occupied.
Surrounding the Highport is the shipyards... divided into three equal and equidistant sections. You can also spot at least a dozen weapons turrets across the lunar surface with probably more out of sight beyond the curve of the moon. You guess one of them... the larger one... is probably a particle cannon.
As you approach the docking bay, its bay doors slide aside to allow access to the interior. As with any starport, the ship receives an electronic offer of services that you can accept or turn down as you wish. Surprisingly, only the standard starport docking fee is required. That includes any of the auxiliary services, though: fuel, power umbilical, oxygen resupply, water resupply and waste maintenance.