I can't think of many exact examples, but I have heard from friends and colleagues that attended the event in later months, since I always go opening night, that there are some different things that happen later on. In 2014, I learned that they hired more actors in Dracula Untold, specifically in the burned village portion. They also covered that portion in the cave where he is being swarmed by bats. We saw it plenty of times opening night, but later on in videos from the event, they covered it with a black tarp. Also last year, my girlfriends younger sister and her boyfriend went the middle of October and they told us that they got rid of the smell in the very last room of American Horror story, compared to what my girl and I warned them when we went through and were met with that really rancid smell pumped in the last portion.