In 2026, your ability to "park hop" with an Oogie Boogie Bash ticket is supportive but limited to the specific hours of the event. The "Gold Standard" ticket for this after-hours Halloween party at Disney California Adventure typically allows for "mix-in" entry starting at 3:00 PM (three hours before the 6:00 PM start). During this mix-in period, you can enter and enjoy California Adventure freely. However, a grounded reality check: the Oogie Boogie Bash ticket does not include admission to Disneyland Park. If you want to visit both parks on the same day, you must have a separate, valid "Park Hopper" day ticket and a park reservation. Without a day ticket, your "Safe Bubble" is restricted to California Adventure. A supportive peer tip: because the party is a "Bujan" value on its own, many guests choose to spend the morning relaxing at Downtown Disney or the pool, arriving at 3:00 PM to maximize their high-fidelity character encounters and "Treat Trails" without paying for an extra day of standard park admission.