Hey there, Michael, and welcome to planDisney!
I'm thrilled to see that you have a trip to the Disneyland Resort coming up in just a few short months. I'm also happy to share that you can absolutely upgrade your
theme park tickets! In fact, I just did this as well for my visit with my family last fall. We originally had 3-day Park Hopper tickets, and I was able to add an additional day after we found out we'd be arriving earlier than we originally anticipated.
While you can do this at one of the ticket booths outside the parks, my recommendation would be to
call the Tickets line before your visit. We're getting into the midst of a pretty busy season at the Disneyland Resort, so it's better to plan ahead and add that extra day now to make sure you can also get your
theme park reservations for that day.
I almost always recommend adding the Park Hopper option to tickets as well if you can swing it. For those of us who are not California locals and aren't able to visit the parks as often, I think the Park Hopper adds a huge amount of flexibility for the trip! Also, if you purchase the
Disney Genie+ service then you can access
Lightning Lane entrances in both parks throughout the day with your Park Hopper. It's a win-win-win in my book!
I hope you have a fantastic trip, Michael! If you have any other follow-up questions as you continue to plan, please feel free to
write me directly.
Have a Magical Day,
Greg