Hi Matthew,
When you purchase a parking pass for your visit to the
Disneyland Resort, your parking pass has the date printed on it. As long as your parking pass is valid at the time you enter the parking structure it doesn't matter how many times you exit.
In other words, your parking pass entitles you to an entire day's worth of
parking and you're free to go in and out as many times as you'd like. As a matter of fact, if you leave and wish to park in a different parking structure upon returning, you're generally allowed to do so, as long as you present your parking pass to the Disney Cast Member at the parking booth. This applies to the Mickey & Friends, Toy Story and Pumbaa parking areas.
I hope this information helps.
Thanks for visiting the Disney Parks Moms Panel.
Have a Magical trip!
-Anabel M