We were at SSR then transfered over to POR for a few days. I don't recall anything special happening at POR on the 4th.
We spent the day at Epcot, arriving later in the day. We didn't think the crowds were too bad at all. Longest wait was for TT, with a fastpass it was something crazy--over an hour but I can't remember off hand the exact time. I have posted it on here before though. It took that long because they kept shutting down due to thunderstorm activity.
Everything else was fine.
I know they had special events at the American pavilion, but at the time I totally forgot about it and we didn't get to check them out. Drum and Fife Corps, I believe characters dressed in period costume, stuff like that.
We watched the fireworks from in front of the pagoda in Japan. They were amazing. Bonus is that we were able to see much of the fireworks from MGM as well from that spot.
Last year I remember people complaining about MK fireworks. That the park was wall to wall people, a lot of rude behavior and fights breaking out and the fireworks were not as spectacular as they were in years before.
I would go to Epcot on that day again in a heartbeat.
BTW, we really didn't think the parks were too bad before or after the holiday. We just avoided MK on the Fri, Sat and Sun.
We don't get up early either, we usually make it into a park after 10am.