Here's what he says about the festival on his web site:
Say you don't make it into your movie at 7:30 p.m. Tuesday. The Toronto climate is glorious in September, and it is a city vibrating with restaurants, cafes, shops, theaters, concerts, bookstores and actual movie theaters selling tickets to current attractions. And the festival itself attracts exciting street life around the main projection centers and up and down Yorkville, Yonge, Bloor, King and Queen streets. You would have to be very determined to have a bad time in Toronto, and it's just not worth the effort.
Mr. Ebert, welcome back!