Holly & Ivy

At about the 59 minute mark, when Melody is telling Nina what she was doing when she was her age, she says she chose to go to Vegas one summer. Nina (Marisol Nichols) tells Melody that she "danced on one of those neon signs". Marisol Nichols starred as Audrey Griswold, in Vegas Vacation, in 1997. In one scene, Audrey (Marisol Nichols) famously danced on a neon sign.

During the "one year later" part, the dog is still a puppy. Then a few months later the dog looks older (played by an older dog).

References Vegas Vacation (1997)