Hi, Genna! Thanks for stopping by planDisney and asking your question!
With Park Hopper tickets, you only make a
theme park reservation for the park you want to start at that day. Then at 1:00 p.m., you can hop over to the other park. Your reservation will only show the starting park and may say "All Day," but you will have no problem park hopping in the afternoon.
You can also continue to hop back and forth between parks the rest of the day. So feel free to start your day in Disneyland Park riding all the classic attractions, then hop over to Disney California Adventure Park for a fabulous
dinner, and then finish your day with fireworks back over at Disneyland Park!
I hope this helps. Have a fabulous time at the Happiest Place on Earth!
-Linda