For those who aren't interested in reading the Potter books, you should read just one of the chapters from one of the books. Chapter 4 of Prisoner of Askaban. It will give you a hint of what may be coming from the various shops. It is a chapter that puts you as a 13 yo at Disneyland for 3 weeks, and forced to stay, sleeping at their hotels with more than enough money to have fun.
It contains far more that the movie ever could.