Charge a LOT for admission, and include the ability to play with a bunch of the best toys. Then, if you buy a new toy, ~75% of the admission price goes toward the purchase price. I bet they'd make a killing.
And then there's concessions (IKEA and Costco do it).
Shopping as entertainment adventure rather than pushing a shopping cart down aisles of loud marketing boxes floor-to-ceiling.
And, they need to work with apps and games publishers to have the next Cabbage Patch or Transformers not just in iPhone-like limited supply, but as a whole launch event.