Re: Excuse my lack of understanding ...
The moon is complete, irrelevant of how much you see.
Full time extends from The Big Bang to ... well, we don't really know. It's certainly more than 90 minutes though.
Full speed is C - the speed of light.
But regardless of all that, the point was that the 'full' is there to emphasise the 'costs', not to determine what constitutes a cost. Otherwise you get people claiming things like "I needed a new suit for this trial, so that's an extra £2000 cost incurred that you have to reimburse".