I just called today and made dinner ressies in Epcot and the CM told me that the fireworks in Epcot for the 4th of July will be different - they will be done in 360 degrees around the countries.
Sort of like the fireworks that they used to have at Epcot. So we will be in Epcot for the 4th of July.
We watched them last year in the middle of the bridge that goes to TomorrowLand! They were all around us! Tinkerbell flew from the castle! It was very crowded but quite magical!!! I've only seen them at MK, sorry can't help with other parks!