Hi Carrie! Welcome back to the Moms Panel. Your question is very interesting, and sure makes me wonder why the early closing on that day. Generally, when a park closes early, it is due to a private event being held there. I was not able to find out any information on what this could be, and I'm thinking that it is closed for that reason, or maybe there will be some other special event happening that evening that has something to do with Limited Time Magic. Of course, this is all speculation on my part, and until Disney announces why exactly Hollywood Studios will close at 4 pm on Nov. 14, we can only speculate.
If there is anything "big" happening, you will hear it first at the
Disney Parks Blog. I recommend subscribing to their blog, as it's a great way to have all the latest Disney news and info delivered right to your inbox every day.
Sorry I couldn't give you a definitive answer, but hopefully in the future all will be revealed! Have a magical day!
Kristen