Howdy, Lexie! Welcome to planDisney and thanks for your question!
It sounds like you have a trip planned to the Disneyland Resort soon! How exciting!
The Holidays officially begin on November 12 which means that not only will the parks be decorated from top to bottom in season decor, but special Holiday entertainment will begin.
A Christmas Fantasy parade will march down Main Street, U.S.A. in Disneyland Park usually twice per day. The
entertainment schedule is populated about 30-45 days in advance, but I just checked today and it looks like the parade is scheduled to run at 3:00 p.m. and 5:30 p.m. on most days starting on November 12. As your travel dates approach, more times will start to fill in on the calendar, so be sure to check back often.
During your visit, be sure to experience "it's a small world" Holiday. This seasonal overlay is astounding with all sorts of twinkling lights and decor all throughout the attraction. Additionally, Haunted Mansion Holiday, which celebrates Jack Skellington's collision of Halloween and Christmas, will still be available to ride. Finally, cap off your evening with the Believe...in Holiday Magic nighttime spectacular at Disneyland Park.
I hope your visit to the Happiest Place on Earth is full of magic, merriment, and memories!
-Linda