Ok, so I am 36 years old and female. I have never read a Harry Potter book and nor did most of the people my age that I know. I saw one movie (the first one) and it was ok, but largely unmemorable. I think Harry Potter land would be beautiful, but perhaps confusing to me. I don't care about HP or his friends. I didn't connect with any of the characters or stories and probably would understand the terminology. As a hs teacher, I can tell you that about 3-5 years ago we graduated entire classes of Potter fanatics. That would make them 21-23-ish now. The current high school students don't mention Potter anymore. I'm not sure if they read the books or saw the movies, or if they were too young to be a part of that wave. Maybe they read them in middle school and are now on to The Fault in Our Stars or something.
Avatar: I only saw about 7 minutes on YouTube when I heard WDW was doing a Pandora-thing. I thought it looked beautiful and, since I am an AP/DVC visitor to WDW already, I look forward to its development. Don't really care how long it takes either. I'm only 36.
Star Wars: Loved the first 3 (1977, 1980, 1983.) LOVED. Didn't see the next three. Would definitely go out of my way to see any Star Wars-themed land, but that means a visit to HS won't be an afterthought. I wouldn't trek to Universal for it.
So anyway, I'm not 100% convinced that HP is going to stand the test of time. People who like it right now might pass it down to their kids. But I can tell you that my sister (who is 41) did not read any HP books. Her kids (10, 7, 5) probably won't be encouraged to do so either. I'm not sure that Pandora will require much knowledge of or warm-feelings toward Avatar the movie. A lot of posters have said how closely HP and Diagon Alley resemble the movies and such. If you didn't see the movies, what difference would it make? If HP relies too much on fanboys that soaked up every word and detail of the books and movies, perhaps those types of guests will dwindle over time? I honestly don't know, and
I'm sure several usual suspects here whose mouths are still red with HP Kool-aid will tell me that HP is both completely accessible to non-fans (while simultaneously assuring me that Pandora will NOT be) and a dream come true for Potter fans. Okay.
I just got back from WDW and it was crazy crowded everywhere. HS...Epcot....MK. You name it. Crowded. All I do know for sure is Disney does not
need to hurry up and build 10 more attractions and a 5th gate to compete with anyone.