Whilst we have rarely had people cancel at very short notice, we have on occasion been notified just ten minutes before a shoot, sometimes via email. By then we have invested time in preparation for the shoot and have quite possibly turned down other paying work. Sometimes we may have also incurred hire charges for venues that leave us with the burden of a cost. For these reasons we ask for a booking deposit.
We appreciate that sometimes life gets in the way and we of course aim to work with our clients when these things happen.