The TV screen playing continuous footage of CAS outside The Sims 4 booth, is streaming live footage from a little room to the side of the booth. Create-a-Sim designer John, is creating simified versions of folks waiting in line, then Ryan & Graham use those Sims to show off the “Gallery” feature during the closed doors demo.
I was given the opportunity to watch John create a simified version of myself, so check out the 13-ish minute video of the creation from CAS!