I stopped by on July 3 (hopefully that counts) and they were already advising guests that the beach was for Polynesian resort guests ONLY. They had MB readers and the like out. Speaking with a CM, I concluded that they were doing this because of the construction limiting the view.
We had dinner at CG and watched from there (it was amazing!). On the Fourth, we headed to Epcot to see the fireworks there, which were beyond compare. If you've never seen the Heartbeat of Freedom (the IllumiNations FoJ tag), you must!