Speaking from Chicago, Ford said his family had "hundreds of thousands" of supporters and opening the event up to the public was the best way to let them in on the fun.
"We don't want to insult anyone by leaving them out," he said.
"Anyone can come."
Although $80 to party with the Ford family might be too steep for some, it's scheduled only one day before the family's latest Ford Fest, a free semi-annual barbecue open to the public.
Doug Ford didn't have any firm numbers on how many people he was expecting, but he said Ford Fest regularly draws between 5,000 and 10,000 attendees.