I did the early one when I went last May and it was on a day that the park opened later than when the tour started. I wish I had more specific details, but sadly I dont. Nevertheless, we were able to get into the Main Street area before anyone else. We were asked to stay by the tour gardens, but we were able to get as far as the top of the railroad staircase and get an amazing photo down the center of Main Street with no one there.
When the tour started, the tour guide took us to the partners statue. By this point, Main Street was opened, but the hub was still blocking all entrances to the lands. So, we got to be on the other side of the partners statue, get people free pictures of the castle and get pictures of the hordes waiting to go in.
While the tour itself was pretty awesome, including a stop in Walts Apartment, the early entry and people free views of Main Street and the castle made it for me.
Definitely worth doing again.
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