Hi Joyce, welcome to planDisney!
How very thoughtful of you to consider including your grandchildren on your Walt Disney World vacation!
Theme Park Tickets can easily be purchased online or if you prefer, you may purchase
new tickets by speaking to a cast member over the phone. Please check
Theme Park Reservation Availability before purchasing additional tickets. (Beginning January 9, 2024, theme park reservations will no longer be required for date-based tickets.) I checked the week of your arrival date and as of now, there is availability to all theme parks.
As long as you don't go over the room capacity at
Disney's Caribbean Beach Resort, they can certainly stay with you in your room. Most guest rooms have a capacity of 4 to a room, but some rooms have a child-size pull-down bed, allowing 5 guests in a room. Joyce, I bet they will enjoy riding the
Disney Skyliner, the views from above are spectacular!
Since you will be visiting during the holiday season, I hope you will have time to visit some of the beautiful gingerbread displays at the other resorts. My must-visit resorts include Disney's Grand Floridian Resort & Spa and Disney's Contemporary Resort located on the resort monorail loop, Disney's Beach Club Resort, and Disney's Yacht Club Resort - a 10-minute walk from the Disney Skyliner, and Animal Kingdom Lodge. The Disney Parks Blog recently published a
Behind-the-Scenes Look at Preparing for the 2023 Walt Disney World Holidays that you may find interesting.
Have a magical holiday vacation, Joyce!
Diane