In early Dec I had a return home flight at 7 a.m. also. But, I finally changed it because I just couldn't bring myself to get up that early in order to leave WDW. I also wouldn't have been able to get my luggage sent ahead or get my boarding passes. The DME desk doesn't open until 5, at any resort. So, if you are being picked up at 4:30 or so, you will have to carry your own bags and check your stuff at the airport.
Now, when we were at Pop over the summer, we were able to get our boarding passes printed off at 2 a.m. when we returned from an EMH night. But, we were flying SW and they are a bit different.