When Tony Revolori, then a 17-year-old with little Hollywood experience, was beginning to shoot Wes Anderson’s “The Grand Budapest Hotel,” Jason Schwartzman took him aside to give some advice. No one knew better than Schwartzman what Revolori, who was starring alongside Ralph Fiennes, was in for. Schwartzman was by then a regular member of Anderson’s troupe, but he was also 17 when he first broke through as Max Fischer in Anderson’s “Rushmore.”