In the late 1800s Moon Towers were a real thing. Gas lantern streetlamps were common but not very bright. Electric carbon arc lights were very bright but too large to put in streetlamps (incandescent bulbs were still experimental). So these really tall, very bright carbon arc towers were used to light areas of several square blocks.
This is the first time Rick belches without drooling, and apologizes for it.
After being detoxified Rick's skin tone changes from its typical gray hue to a more peach color until he is "retoxified".
Summer is watching "Miss Pancake", the same show Morty's teacher was watching in Lawnmower Dog (2013).
In that episode, the character's catchphrase was "You don't know me;" here, it's "You do know me."