Am i really expected to wander around the planets, showing up in person at every tenant's doorstep just to collect the rent ? Thats so archaic creates an paradox with the sci-fi setting ! I can suggest adding an bank to the outpost, that will fetch every payready tenant's rent and dispense it upon interacting with it. edit: as an bonus you can make the vendor an novakid, as the outpost lacks any permanent novakid resident, and theme his vendor stall after wildwest banks.