Star Wars Weekends officially started today with a special Galactic Gathering event, and then will be running every weekend from May 15th until June 14th 2015. Below you will find the celebrity guest list to help you plan which weekend you want to attend!

The official site has just revealed the full guest list for the 2015 Star Wars Weekends and it does not disappoint with first time guests Ian McDiarmid & Frank Oz!

From the Disney Parks Blog:

Weekend I (May 15 – 17)

• Ian McDiarmid: Senator/Emperor Palpatine (Star Wars: The Phantom Menace; Star Wars: Attack of the Clones; Star Wars: Revenge of the Sith, Star Wars: The Empire Strikes Back, Star Wars: Return of the Jedi)
• Amy Allen: Aayla Secura (Star Wars: Attack of the Clones, Star Wars: Revenge of the Sith)
• Tiya Sircar: Sabine Wren (Star Wars Rebels)

Weekend II (May 22 – 24)

• Warwick Davis: Wald, Wicket W. Warrick (Star Wars: The Phantom Menace; Star Wars: Return of the Jedi)
• Silas Carson: Ki-Adi-Mundi, Nute Gunray (Star Wars: The Phantom Menace; Star Wars: Attack of the Clones; Star Wars: Revenge of the Sith)
• Vanessa Marshall: Hera Syndulla (Star Wars Rebels)

Weekend III (May 29 – 31)

• Warwick Davis: Wald, Wicket W. Warrick (Star Wars: The Phantom Menace; Star Wars: Return of the Jedi)
• Daniel Logan: Boba Fett (Star Wars: Attack of the Clones)
• Steve Blum: Zeb Orrelios (Star Wars Rebels)

Weekend IV (June 5 – 7)

• Ray Park: Darth Maul (Star Wars: The Phantom Menace)
• Jeremy Bulloch: Boba Fett (Star Wars: The Empire Strikes Back; Star Wars: Return of the Jedi)
• Ashley Eckstein: Ahsoka Tano (Star Wars: The Clone Wars; Star Wars Rebels)

Weekend V (June 12 – 14)

• Frank Oz: Yoda (Star Wars: The Phantom Menace; Star Wars: Attack of the Clones; Star Wars: Revenge of the Sith, Star Wars: The Empire Strikes Back, Star Wars: Return of the Jedi; Star Wars Rebels)
• Ray Park: Darth Maul (Star Wars: The Phantom Menace)
• Peter Mayhew: Chewbacca (Star Wars: Revenge of the Sith; Star Wars: A New Hope; Star Wars: The Empire Strikes Back; Star Wars: Return of the Jedi)
• Taylor Gray: Ezra Bridger (Star Wars Rebels)

Of course, Star Wars Weekends host James Arnold Taylor (Obi-Wan Kenobi in Star Wars: The Clone Wars and Star Wars Rebels) will be appearing every week, and in addition to Ashley Eckstein’s Weekend IV guest spot, she will also be joining us every day of the event as host of “Padawan Mind Challenge – Family Edition.”

Details are still coming together for the event, but some of the highlights of what’s new for Star Wars Weekends 2015 include:
• “Star Wars: Rebels” – Relive the adventurous twists and turns of the first exciting season of the Disney XD series “Star Wars: Rebels,” in an all-new show with Star Wars Weekends host James Arnold Taylor and a special guest from the show’s voice cast … along with a few surprises!
• Autograph Opportunities – For the first time, autograph sessions with Star Wars celebrities will be held in an indoor location, just off Commissary Lane near Star Tours – The Adventure Continues. For complete details about autograph opportunities, be sure to visit StarWarsWeekends.com prior to your visit.
• Darth’s Mall – Can’t find the droids you’re looking for? Head over to this new complex of shops near Streets of America for the best selection of Star Wars merchandise in this galaxy or any other!

It's important to note that Ian McDiarmid and Frank Oz will not be signing much like when Mark Hamill attended in 2014 and was not part of the daily autograph sessions, so keep that in mind as you prepare your schedule.