As far as my area of expertise goes . . . I would have to say it relates to brainwashing my family into believing that life revolves around preparation for our annual Disney vacation. LOL. After that it might be in managing the Magic Kingdom to suit particular situations. I haven't been to the other parks enough to be an "expert" at those.
I am what we refer to in the travel industry as a graduate of The College of Disney Knowledge. Trying to keep up with all the new stuff that Disney adds is a full time job, but because of my certificate, my family thinks I am the one with all the expertise, therefore, we get to do things my way whenever we visit any Disney park.
Let me know if there is ever a question I can help you with. I used to be a travel agent and I am currently a travel writer and Disneyaholic!!
Annie The Savvy Tourist