updated 07/13/2012 AT 3:00 PM ET
•originally published 07/13/2012 AT 3:10 PM ET
It’s back to business for the Cruise family.
A private jet took Connor, 17, to the popular, celebrity-filled convention, where he worked the IGN Entertainment party celebrating the new Resident Evil 6 game at the Hard Rock Hotel, opening for Jermaine Dupri and RZA.
“He seemed very upbeat and he looked great,” says an onlooker. “He seemed to be having a great time performing for the crowd. Everyone totally ate it up! They were really getting into the music he was playing.”