Welcome to planDisney, Julie!
While I have personally stayed in a Walt Disney World Resort hotel room with four adults, I can say from experience that it was a little crowded, so I think that deciding to get an extra room is the right call.
Now, Julie, if you have your existing vacation package booked, all you will need to do to book another room is to go online and book an additional room. When you book the second room, be sure that you put the names of the people staying in the room on your reservation, so that all of the key cards and
MagicBands work properly.
Even though the second reservation will be under a new reservation number with someone else's name, you will still be able to
link it to your
My Disney Experience Account and manage all plans for that party.
I hope that this helped, Julie. Please come back here if we can help you decide where to play, stay, or dine at Walt Disney World Resort.
Enjoy your fabulous stay!
Sarah B.