Here's our experience with the Jedi Training Academy.
We got there at 3:00pm for the 3:30pm show. We sat just behind the front line (that they tell you not to cross) on the left side. Most of the people who got there before us were on the right side. I had done DD6's hair in Princess Leia buns and put on her birthday button. We didn't bother with a sign, and I didn't see a single sign in the crowd. Apparently you have to be between 4 and 12 years old to participate, so we told DS3 that he will get to watch the show but he is too young to be chosen. So, he didn't stand up, but several of the kids chosen looked younger than him. One boy was so little that the Jedi Master mentioned "better hold the light saber a little higher. You won't be fighting ewoks."
DD6 stood up when they asked everyone who wanted to be a Jedi, and she waved her arms. She was the 3rd child chosen. Most of the girls who volunteered were picked.
When she was chosen, they gave her a robe and showed her where to stand. She got to go up on the stage (because she's so cute!?)
They showed them how to activate the light saber and practiced all of the moves. The Jedi Masters had to help her activate her light saber the first time because it was tricky.
They practiced for a while, then the storm troopers came out and they gathered up all the kids. Then the stage opened up and Darth Vader appeared. Then Darth Maul came out and showed off his moves. They tried to get the kids to join the dark side, but none of them would. Then the kids got to fight them. Darth Vader was on the stage and Darth Maul was on the ground level, so 2 children get to fight at a time with a Jedi Master helping them.
DD was the first child and she got to fight Darth Vader (again, because she's so cute!)
After every child had a turn, Darth Vader and Darth Maul went away, defeated. They brought up all of the children on the stage and presented them with a certificate. The children came back to us - they stressed that the parents stay where they are and have the kids go back to the parents.
I didn't know this, but there was a photo pass photographer. I found this out later by talking to a parent in a line up. So, the next day I went to the photo shop and got all of the pictures added onto out PP+.