Hypothetical question - how do you make a contact sheet before acquiring the actors' contact information?
Touche!
In this situation (which I've almost been in..haha) I'd piece together a contact sheet of what I did have, and have everyone else fill it in first thing in the AM so I could publish it ASAP
Other things I'd do - (other than trying to schedule a production meeting following rehearsal that day)
-Emergency Information & Conflicts Form
-Character/Scene/# breakdown
-Calendar (with giant SUBJECT TO CHANGE's all over it..)
-Put together my binder with tabs for scenes, musical #'s, in script and score (if they gave you that)
-Pull templates for conflict calendar, props, costume, and actor tracking to be photocopied
And that would probably get me through the first day, considering the first day could end up being design presentations (in that case I'd nab photocopies of scenic design drafts & costume plots) music work with the MD, or read-thrus and table work with the director, leaving more time to fill in the blanks..