Production - Shooting

We are shooting our film tonight from 5pm onwards, we have the props we need, however we had to go to plan 'B' on the typewritter issue. To have obtained the type writer we would have had to help another group with lighting, but since im the only one with a lighting certificate i would have had to have done it. However i already had somthing planned for the night already. Besides, obtaining the typewritter wouldnt have been available untill the wednesday, 2 days after our shoot.