The first thing Danny instructs DJ to do before she starts driving is to adjust the mirrors. Adjusting the mirrors is the last thing to do before starting to drive because everything prior gets the driver into position.
Jesse and Becky are singing the Bonanza song to the twins. Yet when Jesse graduates high school a year later, it is revealed that he hates the song because the dentist would play it when his teeth were drilled. Just hearing hurts his teeth. But here, Jesse is fine playing with his kids.