Hey there Molly,
Welcome to planDisney and thanks so much for your question!
The Holiday season is my absolute favorite time of year to visit the Disneyland Resort, so I'm thrilled you're planning a trip to experience the magic!
It sounds like you're interested in the
Holiday Time at the Disneyland Resort Guided Tour, which is currently available to be booked for select dates during the holiday season! If you visit the page I linked, you'll see a blue "Check Availability" button. When you click that, you be able to select the date that you're interested in and it will give you a list of time slots available for that date.
It looks like there is still quite a bit of availability right around the dates of your visit, so you should have some flexibility as to when you want to experience this tour.
I haven't done this tour, personally, but I have heard great things. There isn't much that can get me more into the holiday spirit than the magic of the Disneyland Resort during this time - the lights, decor, and music. Getting to experience all of this and also hearing stories about the history of the holidays in the parks sounds like a fantastic way to spend a few hours while visiting the Happiest Place on Earth.
Thank you again for your question, Molly! I hope you enjoy the tour and your visit to the Disneyland Resort.
Have a Magical Day,
Greg