Last year on May 31st we had 8:25 ADR for Crystal Palace on DD's 5th birthday and loved the time. We were able to walk around a little and take pics coming up Main Street with it pretty much deserted, also lots of pics at the castle too with her in her Minnie costume. We finished eating right when the park was opening and it was nice to just walk into a land with no crowd at all.

The early ADR's at MK are the way to go in my opinion.