While you're waiting, I can answer a few of those questions for you....
Her cake was made by the Grand Floridian bakery because she was dining there. You would place the order through your dessert party planner. If your DP is not at the Grand Floridian, you will need to specifically ask to have your cake made by the GF Bakery (and pay a $75 fee) or else it will be made by the bakery at Epcot/DHS/wherever your DP is. I would not recommend having it made by Epcot's bakery, although DHS did a decent job on
our fondant anniversary cake.
A one-tier Mad Hatter cake costs about $200, but the price may vary depending on how much decoration you want.