Sandra doesn't want to go to Cheyenne and Mateo's movie night because she doesn't trust their level of cleanliness. It was established in High Volume Store (2018) and other episodes that Mateo is obsessive about cleanliness.
Isaac notes the similarity between himself and Will Smith, stating that their debut albums came out the same year. Health Fund (2017) established that, as of November 2017, Isaac was under 30 years of age, meaning he'd have been born in (very late) 1987 or later. Will Smith's debut album, "Rock the House" (as The Fresh Prince and DJ Jazzy Jeff), was released in 1986, before Isaac was born.
Garrett states that the employee handbook limits hair length to 3 inches "in diameter." Diameter is from one side of a circle to the other, through the center, so in order for hair length to be less than 3 inches in diameter, the person's head would need to be smaller than 3 inches across.
The pizza boxes are all clearly empty.
Like most actual big box retailers, Cloud 9 has always been shown to lock their cabinets with a cylinder lock. When they wish to ceremonially cut the lock from the Black hair care products, the cabinet is suddenly shown with a regular padlock.
Cheyenne and Mateo left work early to drive to a rapid Covid testing center in Illinois to prove to Sandra that they are sanitary and she would be safe coming to their movie night. They arrive at the store and run to her unmasked, and there is still time between then and the weekend, so having had a clean test earlier in the day would not prove that they are and will remain Covid-free.
Ken attempts to cut the lock off a cabinet by squeezing the key cylinder with a pair of bolt cutters, rather than the padlock shackle, as would be the proper way to use bolt cutters.