Fourth time in 22 seasons to not feature Stewie. He also was absent in Season 9's Welcome Back Carter (2010), Season 14's Candy, Quahog Marshmallow (2016), and Season 19's Tales of Former Sports Glory (2021).
Brian tells Joe that the city Kokomo does not exist, but there is a city called Kokomo in Indiana. What doesn't exist is the Florida Keys' island described in the Beach Boys song.