Hello there Georgina,
Welcome to planDisney and thanks so much for your question! I'm thrilled to see you have a trip to the Disneyland Resort coming up next week!
I ran into a similar scenario on a recent family trip where we realized our 2-day tickets weren't going to be enough for what we wanted to do during our visit, so we ended up adding an additional day. It can definitely be done!
Typically, you are able to upgrade standard
theme park tickets as long as it is equal or greater in value - this would include adding on a day to your trip. The way to do this is by
speaking to a Cast Member at the Tickets line. They'll be able to see the specifics of your currently planned trip and modify your tickets to include that additional day, and you can then pay the difference.
During your visit, the Disneyland Resort will be in the midst of the
Holiday season! There are so many fun things to do and see, but in particular I have really enjoyed exploring all the booths of
Disney Festival of Holidays and catching a showing of
Disney ¡Viva Navidad! - both are in Disney California Adventure Park. There was a recent
Foodie Guide for Disney Festival of Holidays published on the Disney Parks Blog that is a great overview of all the delicious offerings you'll find as part of this festival.
Thanks again for your question, Georgina! I hope you and your family make some amazing new memories on your trip to the Happiest Place on Earth.
Have a Magical Day,
Greg