Hello, Jill! Thanks for bringing your question to planDisney!
So many guests were looking forward to the Disneyland After Dark: Villains Nite that was supposed to take place last spring! At this time, that event hasn't been rescheduled and tickets for any Disneyland After Dark events cannot be applied to other tickets. I suggest calling (714) 781-4636 to see what options you have for your special event ticket.
If you want to have a villainously good time at the parks, now is the time!
Halloween Time brings out all the devilish fun including characters dressed up in their Halloween costumes, special overlays on select attractions, the Halloween Screams nighttime spectacular, and much more! Or if you just wanted to frolic around Disneyland Park after hours, then consider buying a ticket to
Disney Merriest Nites which takes place on select evenings this November and December. During this event, you get to experience six different celebrations throughout the park from the Feliz Navidad Party in Frontierland to the Frozen-Themed Party in Fantasyland, all after the park is closed to day guests at 8:00 p.m. Tickets are selling fast so I suggest you purchase right away if you're interested.
I hope this helps. Have a magical day!
-Linda