In the Eddy Street Commons garage. I think it will probably cost all of around $4-$5. It will be far from full. And egress after the game is a piece of cake.
Not a long walk to CFIA, and if you're going for basketball instead, they run shuttles (not sure where they stop at by the JACC).
I wouldn't think this lot would fill for the Globetrotters
Send kids out on regular reconnaissance of the parking lots.
When lots clear, have the oldest kid drive home.