My experience is that there are a variety of levels of demos during the formal time. Informally, you will find people amazingly helpful. The vendor area is not to be missed as some of the best turners in the world are showing off new products and lathes. I actually think the Convention is better for new folks as it is all fresh. After a while, the demos become a bit redundant and your real reason for going is for the comraderie.
Get to Louisville is my bottom line advice. The first national convention you go to will be very special as you will learn a great deal and meet some even greater people.
David Gallowau