There are no rules against this. In fact, she mentioned she has taken her 4-year-old back to her car for a quick mid-afternoon nap break as well! I will say, though, that these parking structures are often pretty loud and can get pretty warm.

No, official Disneyland Resort policy strictly prohibits napping, sleeping, or overnight camping in vehicles within its parking structures (like Mickey & Friends or Pixar Pals) or surface lots (Toy Story). While you might be able to get away with a quick 20-minute "power nap" in the back seat during the day, security teams frequently patrol the structures and will ask you to exit the vehicle if they see you reclining or sleeping for an extended period. This rule is primarily for safety, ventilation, and liability reasons. For tired guests in 2026, a better alternative is to utilize the "re-entry" policy to return to a nearby hotel for a mid-day nap or to find a quiet, shaded spot inside the park, such as the Main Street Opera House or the Carthay Circle area. If you are road-tripping and need sleep, you must book a legal campsite or a hotel, as Anaheim municipal codes also forbid overnight car sleeping on public streets and commercial lots.