Unsurprisingly can't sleep. (Although did manage to have a nightmare about being asked detailed statistical questions on uni student numbers after my presentation.)

Sister has called to say that the room I'm speaking in can hold 50 but they expect 30ish I think she said. It is open to all the faculty (admin as well) not just library staff. However, she's allowed to attend and will probably do so.

Not much more I can do now...