We are off to US/IOA in Aug. Honestly I have no time/and really don't want to watch all the HP movies or read all the books. My girls on the other hand have seen/read them all. For me...will it be good enough to watch the 1st movie so I have an idea of what is what as we tour the castle? I did read the first 2 books when they first came out, but really don't remember them.