The Pilot's job is to do the math....provide the Client with the available Payload....and then drive the machine.
It matters not how many passengers that winds up being....that is for the Client to deal with.
You are going to the Rig with whatever the Client puts onboard....be it just the Daily Newspapers....or a Copying Machine....or a bunch of Bears.
As long as the Passenger, Baggage, and cargo weights are accurate....that is all the Crew need worry themselves about.