When we went to the first MHP, the AP treat was at the Opera House where they normally show Great Moments with Mr. Lincoln. It was a Mickey "krispie rice" treat (guess it isn't made with Rice Krispies ) and a Big Hero 6 drawstring bag.
There is a regular treat trail in the Main Street Cinema where they usually show Mickey cartoons.
The pre-packaged crisped rice treat looks like the one you can buy throughout the parks, but the one handed out at the AP Treat Trail had a MHP logo on it! It was neat and worth getting.