I was there on all four days. The Dragon part was limited to a single seminar room. Their special guest, a German WW II tanker, bowed out due to health issues. They only had one presentation, which I missed.
Most of the activities were presented by the
IPMS (International Plastic Modelers' Society) , which partnered with Dragon for the event. IPMS hosted trips to armor and air museums and the like--all of which you had to register for before the event started. They also hosted numerous seminars. These covered various modeling issues, but in addition covered military history topics, such as a presentation on the Tuskegee Airmen, and one on the colors of various warbirds by a photographer who showed some excellent examples.