Sam, 27, is filming a role for the second season of the show
He was snapped on the Disney lot with the show s stars Kat Dennings, Shay Mitchell and Brenda song
The personal trainer turned aspiring actor has been dating Britney since 2016
The pop superstar, 39, testified again Wednesday about the abusive conservatorship overseen by her father Jamie Spears
She told the judge she wants her dad to be charged with conservatorship abuse
She added she thought they were going to kill her