Goof: When the gang is in the ship's radio room, the pinstripes of Alexander's pants are briefly missing.
Goof: How does Melody have glasses after she's turned old?
Goof: After Alexander had gotten the antidote for the old age mist, he used it to restore Melody, Alexandra, and himself. But Sebastian was restored even though Alex wasn't seen using it on him before the ensuing chase scene.
Josie: Wow-wee! How about us getting to do a gig onboard a mysterious millionaire's yacht?
Alan: Yeah. The invitation left on our hotel mailbox said to board the Monte Carlo Queen.
Alexandra: (speaking with a snooty English accent) Do hurry and find the yacht, Alan dear. The sun is spoiling my alabaster complexion.
Alan: Oh, boy!
Melody: Are you afraid, Alex?
Alexander: N-No, I-I'm just terrified. (Melody chuckles)
Alexandra: Oooooh! Why do I always get stuck with a cat, and a chicken, and a giggling blonde?
Alexander: Follow me, girls. A little birdie tells me this is the laboratory.
(Pushes thorugh the door and all fall down a hole on the other side)
Alexander: Just wait 'til I get my hands on that lying birdie!
(After being sprayed with the old age mist)
Melody: Oooh, am I old! I must be at least 30.
Song: Clock on the Wall.