My favorite visit, was to the BYOC build your own clone booth. Check out http://www.buildyourownclone.com . They have kits for you to build actual clones of your favorite pedals. I've been building their kits for a couple years now, but it was overwhelming to sit and talk with the owner, and really tweak and geek on all the circuits. I was able to pull a few secret mods outta him too, after a couple of beers in the hotel lounge...look for upcoming Gearmanndude pedals...he gave me some great ideas. Please visit his site, and leave some money behind...it's a wonderfull addiction.
Other favorites: The SOULDIER Strap booth...they make the OWL strap that I love and covet, as well as a ton of other vintage style ACE straps. They use actual ACE material from the 60's and seatbelts for the backing....very cool. I also dug the Bursts' at Tom Whitrock's booth...he's the dude from The Les Paul Forum....
What else? Well...I bought a wonderful pair of previously loved Lizard Skin cowboy boots, and some sweet pearl snappy shirts...only in Texas my friends.