Was there yesterday, drove from London as I do every year for the past 30+, still a great way to spend the day with the kids despite the cost. If you buy tickets in advance they are only $16 and no waiting in line (they have this deal every year online) , subway or GO train saves on parking and gas, I believe there is FREE parking still at Ontario Place(they have in the past), just an extra minute or 2 walk.
The GREAT deals went away 20+ years ago so I'm not sure what everyone is complaining about unless they haven't been in 20 years or so
As far as deals go look for the no tax places, 13% off everthing!
I'll be back with the kids again next year