Hi Alisha! Thanks for dropping by planDisney.
Your party night is almost here! I bet you're excited. I love getting in the spirit and dressing up too, so I understand your concern about entering the park in costume. First, be sure you've read through the
Costume Guidelines. While special event nights have a different set of rules than a typical park day, you still need to follow the guidelines for costumes, and it's always up to the discretion of security whether an item or a costume meets those standards.
You should be able to enter Disney California Adventure Park as early as 3:00 PM with your sold-out
Oogie Boogie Bash - A Disney Halloween Party ticket. Isn't that fantastic? The more time to explore all there is to offer during
Halloween Time at the Disneyland Resort, the better. And the good news? You should be able to come dressed in your costume for that earlier entry time. We came in our family costumes last year ahead of a party and we took some fun pictures and enjoyed Attractions ahead of the night of fun. You should be okay doing the same so long as your costume meets those current guidelines.
I hope this helps!
Elizabeth