Eat lunch off-site, get groceries, and hopefully check in around noon.
Hoop Dee Doo Review at 4, then take the boat to Magic Kingdom to catch the Main Street Electrical Parade, and I believe the 7th is the last night for special Independence Day fireworks.

Probably throw in a trip down a mountain or two.
Does anyone have a favorite place to catch the parade? Last year, we caught it as it ended in Frontierland right next to Splash Mountain. It was a pretty good spot, but we are always looking to get a different point of view.