Hi, Mike!
If you are in line prior to the start of
Mickey's Halloween Party, you will be able to enjoy that attraction. However, once the party starts, all guests without a valid party ticket will need to exit Disneyland Park. Cast Members will direct non-party guests to the exits. To enter any line after the beginning of the party, guests will be checked for their party wristbands.
Once Mickey's Halloween Party starts at Disneyland Park, your fun does not have to end. If you have the park hopper option on your theme park ticket, you can hop over to Disney California Adventure (check park hours). If not, plan to spend some time in the
Downtown Disney District where you can enjoy fabulous restaurants, fun shopping, or maybe even
see a movie. The magic never ends at the Disneyland Resort!
Wishing you a magical visit to the Happiest Place on Earth!
Cathy