[xjcaptain]

I think you are confusing weight and balance issues with revenue issues. The only reason a captain would move people aft is to get the center of gravity of the aircraft within limits. With a light load, the balance on many aircraft is too far forward to be within limits, and may require moving people and/or freight to achieve the proper balance. As far as the first flight, are you upset that you were not GIVEN something you did not pay for? Try the same logic at an auto dealership. Buy the cheapest used car on the lot, then demand the shiny new one for the same price because they happen to have a bunch of those that have not been sold.