It was packed. Got online at 10:00 this morning, and there were already at least 100 people ahead of me. If you plan on getting there at the open, you show up with your online tickets, or you buy them at the door. Either way, you are getting a wristband and waiting in the entrance line (separate from the ticket purchase line). I think if you get there after the doors open, you will still need to join the entrance line, but my guess is that the line disappears fairly quickly after the doors open.
Lots of great vendors there this year, some new ones I think. I actually stayed there until 4:00 to see if I could win anything in the raffle, and I scored some ATI bulbs! The place was pretty packed until the raffle, but it started emptying out right after that, well before the 6:00pm close. If I could, I'd be going again late Sunday afternoon to see what kind of deals I could get on stuff that the vendors don't want to take back home with them.