Hi Linda,
One thing I always feel is true about a Disney theme park experience is this: the magic of the experience remains the same in the moments you're there. So, the way I see it, if some of the Mousketeers in your party will visit the Disneyland Resort theme parks at a different time, the magic will be there awaiting them.
You can easily view and manage your theme park reservations through
My Theme Park Reservations. You can also use this feature to cancel a theme park reservation. When you select the option to cancel a reservation, you'll be prompted to select the Guests from your party for whom you wish to cancel the reservation. So, in your case, you could cancel the theme park reservation for the four people who will no longer be visiting the theme parks with you.
Linda, one important note to emphasize is that you cannot modify theme park reservations. For example, you would not be able to select the four Guests who won't be joining you and choose new dates to reserve for them. What you would need to do is to use
Theme Park Tickets & Reservations and select the "Make Park Reservations" button to make new theme park reservations for these four Guests in your party.
I recommend checking the
Theme Park Reservation Availability calendar to make sure that the new dates for which you want to make reservations are available.
Linda, I hope this information is helpful as you plan all the fun for your visit to the Disneyland Resort theme parks!
Jerry