Hi Linda!
I'm sorry to hear that the other members of your traveling party may not be able to make it with you. It's always sad to miss a trip to the Most Magical Place on Earth.
You may want to verify with
a call to Disney because they will be able to look up the exact tickets associated with the My Disney Experience accounts, but the 6-day tickets should be good through December 31, 2018, as long as they are not used. Once used, most tickets expire 14-days from first use. Hopefully, the other Guests plan on visiting before then, but if not, they may be able to exchange those tickets for credit in purchasing new tickets after that date. Although I am unable to see your exact tickets, most
Walt Disney World Resort theme park tickets work this way.
I'm hopeful the rest of your party will be able to join you, but if not, at least you have some options with the tickets you already purchased. Please let us know if there is anything else we are able to assist you with, Linda, and have a wonderful vacation.
Pixie Dust,
Lauren