These could be presented at the banquet, if there is one. Poll the speakers to find out if they have special audio-visual needs. Send preliminary letters of thanks to the sponsors. It is likely that speakers, program committee members and sponsors need to be reminded to register. If there are to be small gifts for tutorial and invited speakers they should be ordered.
Badges legible at a distance are advantageous.
Session chairmen should be told where and when to meet with the speakers in their session. If there are industrial financial sponsors and if there is a banquet, mention and thanks should be given to the sponsors on this occasion. Discuss schedule of functions with the hotel. Duplicate tutorial notes, if there are tutorials. It is a good idea to make a detailed time plan for each event in the course of each day with a note of who is responsible for which event.