Lionsgate executives say they have done all they can. They’ve booked 1,700 theaters, deployed guerrilla marketers to college campuses and pushed to flip negative reviews to their advantage. They have tied the film’s themes to the presidential race in TV ads.

And now it is up to moviegoers. Will people plunk down dollars and turn Francis Ford Coppola’s majestically bonkers “Megalopolis” into an against-all-odds success when it arrives on Friday?

Or will the $120 million epic — in keeping with months of negative prerelease headlines — go down as a hall-of-fame flop?

Most box office analysts are predicting disaster. “Megalopolis” could arrive to as little as $5 million in weekend ticket sales in North America, according to surveys that track audience interest. Ticket sales are split roughly 50-50 with theater owners.

But there are glimmers of hope. The film received a 10-minute standing ovation when it premiered at the Cannes Film Festival in May. On Monday, Lionsgate, which is distributing and marketing “Megalopolis” for a fee, staged a preview at IMAX theaters across the country, selling out locations in New York, California, Massachusetts, Utah and Florida. The stunt was an effort to position what is essentially a big-budget art film as a broad-audience blockbuster.

“We want everyone to come,” Mr. Coppola, 85, said during a Q. and A. that was part of the IMAX event, clasping his hands together in simulated prayer.