This question comes from Tara, who asks: My son will have just turned 5 at the time of our trip, and is small for his age – he would LOVE to be selected to participate in the onstage battle with Darth Vader.  Do you have any suggestions about what he/we can do to increase his chances (e.g., get there at a certain time to claim an early spot, have him yell loud and be animated, wear a Star Wars costume, etc.)?  Also, are there any pay-for options that would allow him to do something like this?  Thank you. Tara:   Great question and you’re going to love this answer.  Disney changed the method for participating in Jedi Training Academy last November.

Link:
Ask a Disney Question: Jedi Training Academy.