Hey there, Elaine! Thanks for bringing your question to planDisney.
Elaine, how exciting that you're hoping to visit the Most Magical Place on Earth in December. I love the
holiday season at Walt Disney World and all of the
special snacks to commemorate the season. Now, from your question, it looks like you're hoping to extend your fun, so let's talk about adding on to existing tickets.
While you usually can add on to standard tickets, a 4-Park Hopper with no expiration date likely was a
Special Offer or ticket that is not currently sold, which means you aren't able to modify that ticket. The good news, Elaine, is that you can purchase a separate 1-day standard theme park ticket and use that before or after your 4-Park Hopper ticket. I have often held several different tickets in my account at the same time and then used them according to my plans. Since the tickets you currently hold are not date-based, you'll have to consider when you want to use those before purchasing a standard theme park ticket, as these are date-based. You can buy the ticket directly through your
My Disney Experience account. Prior to making your purchase, please remember to check the
Disney Park Pass reservation availability calendar and then make your reservation as soon as you have purchased your ticket.
Elaine, I hope this helps as you are planning your upcoming visit. If you have any additional questions, please come on back to planDisney. We love to see a returning guest!
Lauren