Switching between the two parks at the Disneyland Resort, a process known as "Park Hopping," is a straightforward walk across the Esplanade, the open pedestrian plaza that separates the entrances of Disneyland Park and Disney California Adventure Park. To do this, you must have a ticket with the "Park Hopper" option or a Magic Key pass. Under current rules, guests must first enter the park for which they have a starting reservation. After 11:00 AM (though this time can vary based on Disney's policy), you are free to leave that park and scan into the other one as many times as you like for the rest of the day, provided the second park has not reached its maximum capacity. You simply walk out of the exit of one park, cross the plaza (which takes about a minute), and enter the turnstiles of the other park using your digital ticket or MagicBand.