From the Disneyland.com/AP Special offer section
Annual Passholders and their families are eligible for a special offer from Metrolink and the Anaheim Transportation Network.
Now through May 20th, visit on Saturday or Sunday and get a free ride aboard certain lines of the Metrolink along with one free round-trip transfer to the DisneylandŽ Resort aboard the ART shuttle, a clean-air shuttle that brings you right to the doorstep of the magic.*
Space is limited to the shuttle capacity so hurry to reserve your seat! Just for signing up, each household will receive a free 7-day pass to ride Metrolink anytime! Save money on parking and gas and let Metrolink do the driving!
To take advantage of this offer, visit www.rideart.org/weekend for information and registration. Please use the username "train" with the password as "ap". After filling out the requested information, you will be mailed your free passes to board certain lines of the train.
* Offer subject to availability, restrictions (including Annual Passholder terms and conditions) and change without notice. Must be a valid Annual Passholder