This petrol station seems permanently closed

sunset pharmacy

It's not closed. Open regular business hours. Please note - not open on a Sunday.

It also does NOT connect to Turtle Creek, it's a Cul-De-Sac

Turks & Caicos Post Office is right here

is there really a runway?

"not here anymore"
The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: Post Office
POI types: amenity-post_office
OSM data version: 2018-12-13T07:12:02Z
#mapsme

there is a north island to south island ferry here but not sure where it lands in the north island...