Most people link a conference with only the presentations and this is not the case. You will gain as much information from the attendees since you will meet people who own in your general area. It can save alot of time and guessing when one can make a phone call asking what's taking place in, for example Brazoria County. Or, I received a lease offer from X, is it a reasonable offer and are they a good company to deal with? The prime objective of NARO is education and you will find many willing to share.
The industry exhibitors are normally members of the division order departments vs. the land department. I doubt you will have the opportunity to do lease work, but the company representatives can provide names and numbers of their land department staffs.