With Labor Day in the rearview and festival season in full swing, it’s time for the Denver Film Society to start pumping up cinephiles for the 41st annual Denver Film Festival. The full schedule for the Oct. 31-Nov. 11 event will not be announced until next month, but tickets are already available in six packs, 15-packs and a Red Carpet Pack — the last of which includes three screenings at the Ellie Caulkins Opera House on opening night, Centerpiece night, and closing night (Oct.