Arrived by 10 am on a Monday, had very little wait for tickets and no wait whatsoever for our first attraction: "Himalamazon" motion simulator ride. (Mini review of ride: somewhat fun, somewhat motion-sickness-inducing. My 9yo loved it, my 8yo hated it. Ten minutes. You might try the 3D movie instead. But you probably want to do one or the other, since your 20% off coupon from Attractions Ontario is not good on the Total Tower package, nor the observation deck-only ticket.)
Pro tip: stand toward the door side of the elevator on your way up - that's where the windows facing out are.
Superuser tip: upon exiting Le Tour, cross the plaza to the Steam Whistle Brewery and sidle up to the bar for a free pour. Kids can get a Coke in a genuine old fashioned glass bottle out of the old-timey machine. Everyone's happy.