The robot 'dogs' seen in the streets are 'Spot' robots, made by Boston Dynamics, used by the likes of JPL for data capture.
The Gamorean guards being bare chested calls back to George Lucas' original look for them in ROTJ. At the time the prosthetics didn't look good enough, hence the body armor.
Max Rebo is shown with a bith musician playing an acoustic version of the original Cantina Band song from A New Hope. Max Rebo was the band leader at Jabba's palace in Return of the Jedi.
Like The Mandalorian, this also takes place about five years after Return of the Jedi in the timeline of the Star Wars universe.
The Mayor of Mos Espa refuses to visit Fett to pay tribute to him. Mos Espa is the town where Qui-Gon and the rest arrived in Star Wars: Episode I - The Phantom Menace (1999) and where they first met Anakin Skywalker (his exact birthplace remains unknown as he was said to have been the property of Gardulla the Hutt until he was three). Mos Espa is revealed to have flourished and been expanded since it was last seen in Star Wars: Episode II - Attack of the Clones (2002). This is in contrast to Mos Eisley, which had fallen into hard times as seen in Chapter 5: The Gunslinger (2019).