Almost all seminars had a problem with audio visual systems. Seems no convention personnel were appointed to assist presenters with help in setup and problem solving. Also, many presenters did not use the available microphones and some that did had problems with loud, distorted sound. At least two presenters had attitudes when asked questions by attendees. I felt bad for the attendees who asked thoughtful questions only to be belittled by the presenter. At least one seminar was canceled and the only notice given was that it was crossed off the sign at the door of scheduled room. Also, room signs need larger type for better visibility. Almost needed a magnifying lens to read the room signs. Positive note, some very good topics were listed and length of programs were appropriate. So the conference is a bargain for the price charged.