A consistent theme of this thread is that views are not guaranteed and requests are just requests. On this board, trip advisor and speaking to those who have stayed at WBC before, it is just luck of the draw as to views and room requests. WBC has become more and more popular and therefore is full most of the time with Disney and non Disney guests. My friends just returned and stayed there 3 weeks and didn't go to WDW once this time with their kids. They go yearly so didn't care for a fireworks view so asked for a lake view. They didn't get one. Last year, they asked for a fireworks view and didn't get it.
Ironically, they are Wyndham owners but this isn't their home resort, they traded in.
I hope you get the view you like but at the end of the day, your vacation won't be spent staring at your view most of the time and your time there will still be great provided you have a positive attitude and don't sweat the small stuff. These are things I have been telling myself as I can get disappointed by things like room requests not being met toi.
On a positive note, my friend said WBC had a vacant suite open to the guests in the evening to watch fireworks. Her and hubby took the kids a couple of times and said whilst it was nice, you cannot see much of a show from WBC. This was the case last year too. As the show is a lazer, light and fireworks show, you can only see the big bursts of fireworks intermittently throughout the show and not the lazers or lights. There are long pauses between the fireworks parts so it can be a let down for those wishing to see Illuminati.
Everyone I've spoken to says to truly see the fireworks you must make the effort in Epcot or MK one night and see it properly. Perhaps others on here disagree and have a different experience? If so, I don't profess to be an expert, just sharing info.