Chuck E. Cheese's (fictional U.S. locations)/El Monte, CA

4567 Peck Rd, Store #428 was a Pizza Time Theatre that opened in 1982 (month and day unknown) with a Balcony Stage, it still operates as a Chuck E. Cheese

Pizza Time Theatre
Unfortunately, there is no documentation as a Pizza Time Theatre. But they did have a Balcony Stage.

Chuck E. Cheese's Pizza Remodel
It happened around the Late 80's, when they removed the Balcony Stage for the C-Stage and added some decor and games. In the Mid 90's, the C-Stage was removed for the 1-Stage.

"Phase 3" Remodel.
It happened around the Late 90's when they removed old decor and added new decor and SkyTubes.