Notable for marking the return of several past characters, and old locations: (1) Olivia (Stewie's ex-girlfriend) makes her first appearance in almost ten years. It's implied she survived when Stewie tried to set her on fire in Chick Cancer (2006). (2) Vinny who was the Griffins temporary dog after Brian's death shows up at the very end. He was last seen in Christmas Guy (2013), and it's not explained how he came back. However, it's possible that another family bought the dog, instead of the Griffins. (3) Bob's Funland and Cheesy Charlie's (slightly modernized for this episode or it is possible that the old one was torn down and a new one was built) hadn't been shown since the early era of the series.
The security guard in the airport is clearly a spoof of "Black Cindy" from Orange Is the New Black (2013)..
The main story line has Stewie and Brian forming a music duo called Red shirt Blue shirt. The other story line has Chris working for Quagmire. They are wearing their regular outfits which are also a red and a blue shirt.