I thought about this thread some more tonight, and have one more tip that served me well: SPEAK UP.
If you want to get the attention of the maker, or someone behind the table, be ready to speak up and get their attention, because as politely as I can, some people have really poor social skills and don't read situations well. As an example, 2:30PM on Friday is NOT the time to be at a maker's table trying to monopolize their time with your questions, or an impromptu unscheduled interview for your Youtube channel. There were a few times where I did my best to wait politely, as this one guy obliviously kept asking questions, and gushing over the knives of a few makers while I and several others stood there waiting. I wasn't there to chat, I was there to buy. So, finally I said loudly "HEY! OH MAN, IT'S (well known maker here), I REALLY WOULD LOVE TO GET A LOOK AT...." and cut the other guy off. Two of the three times, the makers looked grateful. I understand that a lot of these guys are rockstars, but try to understand that 10,000 people are there to talk to that exact guy (all the makers, really!), it doesn't leave a whole lot of time during the show for you to have an in-depth bonding session with the guy. A bunch of folks behind you getting fidgety while you play pocket pool with the knives? Time to cut it short.
You want to get into a super deep discussion, find 'em in The Pit later. During the show, for the most part, the makers are there to sell knives.