on the ages of your party, I think.
We have small children; DS was only 18 mos for our first trip. DD was only 9 for our last. For us, EE at MK and AK--one year that we went they participated, I haven't looked to see if they are currently-- was worth it. The fdiffeence in waiting 20 minutes and over an hour for Dumbo--less if you're lucky-- and virtually walking on other FL rides was huge for our family. Conversely, there weren't that many attractions as Epcot or MGM that we wanted to ride to make it worth getting up earlier. Those days we went against the EE schedule and just arrived a bit prior to opening.
You'll just have to see what is offered and decide what works best for your group.
THis year, DH and I are going alone, and don't plan to see the light of day before ten!!! WE'll do an e-ride, though. We've never ridden space mtn together before!