How many cameos will there be? Perhaps three, perhaps four?
I predict: Luke, Owen, Yoda, Qui-Gon, Anakin, Vader, Ashoka, Grogu, Boba Fett, Commander Cody, Captain Rex, Leia, Bail, Mon Mothma, General Dodana, R2-D2, C-3PO, Figrin Dan and/or the Modal Nodes, no fewer than four other Cantina characters, Jabba the Hutt, the Tusken tribe from TBOBF, Bib Fortuna, Duchess Satine, Palpatine and his son.
Anakin/Vader obviously
Owen, Beru, Luke, Jabba, Tusken raiders, Young Han Solo and Chewbacca cameo in Mos Eisley cantina (Tatooine)
Bail Organa, Captain Antillies, Leia, the droids (Alderaan)
Padme, Ahsoka, and the Emperor in flashbacks
Young Tarkin, Mon Mothma, Yoda and Qui-gon cameos.
Remember this is only 6 episodes