Zac Efron had a busy weekend in Canada promoting At Any Price at the Toronto International Film Festival. On Saturday, he attended a cocktail get-together with costar Dennis Quaid, and was back in the spotlight yesterday for a photocall and premiere. Zac posed with leading lady Maika Monroe on the carpet before they continued their night at the afterparty. It was just the latest film festival fun for Zac and Maika, who also made an appearance in Venice last week. Zac's not done up north, since he also has The Paperboy premiering at TIFF.