1. Write it down. Everything. Cause you'll forget most of what you discussed within 3 hours. 2. Never say no. The answer is "yes and".
3. Allow for rabbit trails. Great ideas many times come from distractions.
4. Change the environment on a consistent basis. Move where people are sitting, open curtains or windows, change the front of the room, etc.
5. Bring plenty of snacks. A sugar or caffeine rush can be just what the Dr. ordered.....