Play has many different functions for human beings. For children, many kinds of play activities serve as rehearsal for adult roles. As usual, the disabled population has been largely left out of the social planning for use of leisure time, at least until recently. This chapter describes some of the developments, as well as remaining gaps, in recreation therapy for people with disabilities. Friendship bonds are often more important to unmarried people than those with spouses and children to fulfill their needs for companionship, love, and interpersonal interaction, and a large segment of disabled people spend a significant part of their adult lives unmarried. Friends are more than partners in play, they also figure importantly in meeting one’s needs to love and be loved and to have practical and emotional support. A friendship that stresses mutual counseling support is one form of symbiotic relationship.