First off, sorry, I have been on a major assignment/road trip the last few days, but found out this info that has not been mentioned in the news, or at the ART website...
From the OCTA website www.octa.net
>>Transferring to Anaheim Resort Transit
•ART will honor OCTA fare media at all bus stops along the line on the following ART routes: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, and 19 or at bus stops where ART buses directly connect with OCTA buses.
Transferring from Anaheim Resort Transit
•OCTA will honor ART fare media on the twenty OCTA routes that serve the Anaheim Resort Area (29, 30, 33, 35, 37, 38, 42, 43, 46, 47, 50, 53, 54, 56, 57, 83, 430, 453, 454, and 757) at bus stops where OCTA buses directly connect with ART buses. Passengers transferring to Route 757 will need to pay an additional $1.50 for regular, or $2.10 for seniors and persons with disabilities with proper identification.<<
So what does that mean to a tourist visiting the Disneyland area, well, now you have a lot more choices, as you can use either the ART or OCTA system in the area with one $4 day pass. (Though it looks like next year the passes will go up to $5 per day on both systems).
So you could take any ART Shuttle to Disneyland, and then walk across the street to the OCTA Route 43 Bus that takes you to Fullerton and either the Train Station, or the Harbor and Orangethorpe corner with lots of Shopping and the In-n-Out Burger.
The one "local" bus that is not part of the ART agreement is the LA Metro Route 460 that goes to Knott's Berry Farm and the Buena Park Dinner Theaters. But OCTA and the LA Metro does have an agreement, so if you want to use the LA Metro Route 460 Bus, look into getting a OCTA Pass instead of an ART. But the OCTA only sells a one day on the bus, or online, a 1, 7 or 30 day pass (and they will ship it to you).
Hope that helps.