There are many different characters out during Start Wars Weekends, from Darth Vader, Luke Skywalker, Stormtroopers and even Jedi Mickey! It is best to check the current schedules when you attend to see what is happening, as they vary not just year to year, but from weekend to weekend also.
Star Wars Weekends are held over four weekends in May and June every year at Disney's Hollywood Studios at the Walt Disney World Resort in Florida. They are free to attend providing you have regular park entrance, but do get extremely busy. Lines all across the park can be long, especially for the characters and special shows. The programme of events varies from year to year so it is best to check the official website or the guide on the day you attend for more information.
In 2014, Star Wars Weekends will be held Friday to Sunday from 16th May through 15th June inclusive.