One quick tip from me: if you want to see the special Magic Kingdom fireworks, go on Tuesday 3rd July. You'll see exactly the same show, but without the crazy crowds. Then you can either enjoy the resort activities on the 4th, or head over to see Epcot's celebrations where the larger size of the park may help make it feel a little less crowded.
And here are the other activities for the rest of July, also available at the usual Recreation Activities Schedule page: