Hey there, James, and welcome to planDisney!
With an arrival date of April 19, I'm guessing you secured tickets to
Disneyland After Dark: Throwback Nite - woohoo! This event looks incredible! You and your wife are going to have such a great time.
One of the best parts of these special events are the unique character experiences. While I, unfortunately, don't have any inside scoops on who might be appearing at the Throwback Nites, I'm sure they will be amazing. In general, characters are typically signing autographs around the Disneyland Resort when taking photos with Guests. However, I can't definitively tell you how that might work with characters at the Throwback Nite. I'd recommend having your favorite autograph book and pen at the ready and follow the directions of the Cast Members at each character experience location.
Beyond characters, you'll also get the chance to see a
special nighttime spectacular, "Fantasy in the Sky," partake in some sweet 1955-inspired treats, and enjoy access to classic Disneyland attractions!
I sure hope you and your wife have an amazing time at your
Disneyland After Dark event, James - make sure to take lots of pictures! If you think of any follow-up questions as you continue to plan your trip, feel free to
write me back directly.
Have a Magical Day,
Greg