Hi Elaine,
Thank you for taking the time to visit us here at planDisney with your great question. I am sorry to hear that everyone who originally planned to visit Disneyland Resort with you won't be visiting with you, hopefully they will be able to get back to the "Happiest Place on Earth" shortly.
Since you have already purchased your
Theme Park Tickets, when you make your
Theme Park Reservations, simply select the party who will be visiting for each date. When I have made my Theme Park Reservations using the Disney Park Pass System at Walt Disney World Resort, I was able to select different guests on different days, provided they were linked in my Account and had a valid Theme Park Ticket for the days you was wanting to choose. If they already have reservations you will not be able to modify, but you are able to cancel and then make a new reservation. Before canceling any Theme Park Reservations I do recommend checking the Theme Park
Availability Calendar to ensure there is availability for the new dates you would like to visit. Theme Park Reservations are currently available for dates up to June 28, but more dates will be added on a rolling basis.
I hope this information was useful, Elaine. Please come back to
planDisney if you have any other questions, we are always happy to help.
~Stephanie