I don't know about Yoda. That would be neat.
Here's my notes from last year. I don't know yet if anybody is trading out and if any new characters will be in this year.
Jango Fett (across from Soundstage 1)
Bobba Fett (across from Soundstage 1)
Darth Vader AFI Entrance (9:00-18:20)
Roaming Characters 9:30-18:20
Storm Troopers, Zam Wessell, Aurra Sing, Tuskan Raiders,
Gamorean Guard
R2-MK will be meeting guests starting this afternoon with Jedi Mickey near ABC Commissary.
Meet and greet experiences are divided into four sections; light side, dark side, clone wars, and VIP.
Light side characters include Anakin, Cantina Band, Chewbacca, Clone Tropper, Ewok, Jawas, Kit Fisto, Princess Leia, Luke Skywalker, Mace Windu, Padme Amidala, Shaak-Ti, and R2D2.
Dark side characters include Darth Vader, Stormtrooper, Darth Maul, Aurra Sing, Boba Fett, Gamorrean, Jango Fett, Tusken Raiders, and Zam Wessell.
Clone Wars characters include Asajj Ventress, Ahsoka Tano, Captain Rex, and Commander Cody.
VIP characters include R2MK, Jedi Mickey, Leia Minnie, Darth Goofy, and Stormtrooper Donald.
VIP characters meet with guests outside the ABC Commissary beginning at 9:00am and rotate out every 15-20 minutes. Some of the VIP characters will appear together and separately.
Light Side characters are located in areas around the Star Tours attraction.
Dark Side characters are located passed the Toy Story Mania attraction.
Clone War characters are located near Luigi's garage where the Cars characters usually appear.