Fireworks from Hollywood Studios and Epcot can be seen(and HEARD!) very well from CBR and Fireworks from Magic Kingdom can be seen in "the distance".
Of course,we are talking about the "high fireworks" and not the whole show.
The Times Guides will list the days and times for the shows.
For example,tonight's schedule is:
IllumiNations at Epcot-9:00 PM
Happily Ever After at Magic Kingdom-9:00 PM
Star Wars-A Galactic Spectacular at Hollywood Studios-8:30 PM
OPR is a prime Fireworks viewing location.
Banana Cabana has some excellent spots-if you look VERY closely in the middle of the picture,you can just see a "touch" of Spaceship Earth.
There is even a "Fireworks View "Deck" with benches at OPR where Guests can sit and watch the shows.
It is really an awesome experience watching the Fireworks right there on Barefoot Bay and the best part is no need to wait for a bus to take you "Home" to your room afterwards!!!!