Sept. 6’s North American premiere of Peter Landesman‘s “Parkland” generated a respectful response — and not an insignificant number of tears — at the Roy Thomson Hall on the second night of Toronto Film Festival.

“I really do enjoy listening to what the audience sounds like — which has been very different so far,” Landesman admitted during the after-screening bash at Soho House. “They were operatic at Venice, when we got a 10-minute standing ovation, very French at Deauville and very nice in Toronto.”

Landesman also revealed to the audience during the intros — during which Paul Giamatti and Zac Efron received the most applause — that he’d gotten married a week earlier, calling his new spouse “the wind under my wings.”

For exec producer Guy East, the film evoked a specific recollection of how he discovered that John F. Kennedy had been assassinated. “I was 12 and came home and my mom was crying,” he noted. “I think that happened a lot.”

“Parkland” will open Oct. 4 in U.S. markets.