I went with dad and brother a few times, and yes, middle-aged computer guys selling stuff. I was always more excited by the hardware than software, so I didn't check out those tables so much.
My company, Magicomm, wrote 3rd party add-ons for the main system and eventually my partner was hired on with them directly...me? Not so lucky I remember interviewing directly with the owner, Tim Striker, and I was so nervous because I wanted to work there so badly...I almost completely blanked out for the interview and couldn't remember even the simplest of C basics. (Describe an union, what command do you use to zero out memory after you malloc etc etc)
I bombed the interview and never did get to work for my dream company like my partner, who I basically trained on how to use C, did, and to this day this fact irks me lol.
I do remember though spending a lot of time at All Books and Records on Sunrise Blvd (I think) next to the Sears. Coolest book and record store around except for maybe Robert A Hittel’s bookstore on Federal Hwy..
Also spent a lot of time going to Sunshine Software on Cypress Creek Rd.. kind of a magical place run by two rly cool computer dudes..