Ive been working with this client for 6 years. And no they will not pay for extra usage. They pay for the shooting day that is it. It is a small market but they have to / want to use new images constantly. I did this shooting for 2 hours one afternoon. On that day I had another job with another different client in the morning.
This client has tried other photographers and they come back to me now they just hire me, always. Good price, good quality, fast and I am responsible and coordinate the shoots well. It is more about the service. Not always 100% about the image. Also I deal well with the owners of the mostly expensive properties. It seems absurd but if they do not like you they might complaint to the client.
Also, if I h=give this client the service of a more involved production for free how would I justify charging for it on another shoot? They will absolutely say, and rightfully so, "last time you brought lights, grip equipment and took time to light the scene and you only charged me x amount.."