It really depends on what time you get to your resort. If I was going to get to my resort early, I would definately do a park. I would also probably choose Epcot because it is open the latest. You could still see Illuminations and get back to your room by 10:30. Last time we went, we got in at 11pm, so no parks for us that day, but this time we get in at 10am. After check in and some freshening up, we are going to DTD for a late lunch and then going to MVMCP. Then the next morning we will grab breakfast at our hotel and head to Epcot. We are hoping to get there at opening, but if not by at least 9:30 so we can still get FP's for Soarin and Test Track. Then we will take our time during the day. I think if you are getting there so early in the day, if you don't go to a park or at least DTD or maybe the Boardwalk, it is like wasting the day.