All I can say is...wow. That's pretty big. Way to GO, J.K.!
I'm not a fan though, and I've never read a Harry Potter book or seen any of the movies, as it's something that never interested me whatsoever, but I AM a big fan of theme parks, and I try to go to the ones in Florida as much as possible. I can see myself going to "Harry Potter Land" or whatever if the park gets built and I happen to be in the area, but it will never replace Universal Studios or Islands of Adventure in my book. Ha ha @ "book." No pun intended.