You are probably referring to the fact that they are an Authorized Disney Vacation Planner agency or part of Disney's Earmarked program. These agencies sell many Disney trips and have signed a contract stating that they will place a high priority on selling the Disney Destinations. In return, Disney gives them special education and marketing benefits.
Thank you! That IS what I meant, I just couldn't think of the correct terminology. They are able to offer deals etc that Joe Blow travel agencies can't....