Reel, are you still monitoring permits? I am not sure if they have become watered down by money and politics at this point.
They switched to an even more convoluted site in December where you actually needed to know your permit number or check every new permit every day. It was about that time that I needed to focus more on school/my career, so I gave up.
JungleSkip still checks the comptroller.
ParkRumors seems to be on the inside in some capacity unless they do what I had been doing (check every single permit)
Even if I were still checking, I would have quit when I learned of recent developments. It's not worth getting banned from the parks. I'm fortunate in that I could fight it (my profession) but its not worth the ill will. I wish Bob the best though.
Writing was on the wall early on with this policy of theirs...
It was about this time last year that the first Hogwarts Express permits were filed. Look how far we've come!
As for a prop I would like to see, anything from Fortescues.
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I love the potter movie scores, I know them well. The question you raise is one of thought of a lot lately. The music played in Hogsmead currently is pretty much the "best of" playlist from potter moivies 1-6. So there isn't much left that would fit well into Diagon that they haven't already used. I have a feeling we're going to hear all the same music, because that is what the general Potter fan is going to recognize.
They may add stuff from DH 1 & 2...especially inside Gringotts.
Also, in the London area, I could see them having a British rock/music bgm like the other city areas in the park.