Last year was my only time... I'd say no, nothing for sale you couldn't fit on your bike. I think there was only a couple general retailers, but I only walked out with a drysuit hanger. I heard that you might get deals if you hit booths at the right time--like right before packing up, but that was not my experience. Swag was also minimal... just brochures and maybe a few stickers.
Not to show my age... but if anyone else has been debating getting quality prescription lenses installed in their masks (readers for me), Prescription Dive Masks has a booth and I confirmed with Linda that they'll be able to do all the measurements and take your mask back to San Diego with them for installation. Just make sure you bring your script and mask. It'll save you shipping one way at least.