Actually there is a law. It has to do with air pollution. As hotels/motels who use their own shuttles apply for building permits, they have to agree to remove their tram service and join ART. There are few independent shuttles left. Candy Cane and Sheraton Anaheim are grandfathered in, however, as soon as they need a building permit, they will lose the ability to have their own shuttle. Further down the road is the Hyatt, and they have their own shuttle as they are outside Anaheim Resort Transit's authority.