No Stupid Questions: What Exactly Does a Travel Advisor Who Specializes in Disney Do? And Is It Really Free?

If you’ve ever been in a Disney Facebook group, you’ve probably seen people talking about “using a Disney travel agent” or “booking through an advisor.” Maybe you’ve even thought about it yourself but got stuck on a few questions. Do you have to pay them? If it’s free, how does that work? Is it some kind of trick?