We were at BCV in late June one year. We faced towards Epcot. Well, when we got back to our villa, fairly late, we noticed there was a message on our phone. It was BC telling us that there would be testing of the July 4 fireworks at Epcot around 2am that night!!! I can only imagine those poor people that didn't see the message light blinking!!
We had a pretty good view of them....it was incredible, but loud!!! At least they told us about it. I imagine that if the wind is blowing in your direction, the noise would be even worse.