Welcome back, Debra!
You sound like me. I book my fabulous Walt Disney World Resort vacation and then decide I need to add another day, and then another, and one more, just to make sure that I get an extra helping of pixie dust.
Debra, when I have multiple reservations at the same resort I have done one of two things, and I believe that these will likely be your best options.
You can keep your resort bookings as three separate reservations and contact Guest Services at (407) 939-5277 to make sure that your reservations are all linked properly. Once you arrive at Walt Disney World Resort, and before you head to my room, I would recommend that you take a quick detour to the front desk and kindly explain my situation to the Cast Member. While keeping your room can not be guaranteed, I have generally had fantastic luck with this strategy.
If you are within your cancellation window, and there are rooms available at your resort, you can also make a new reservation for your full seven nights, guaranteeing you will stay in the same room. You can then cancel your original three reservations.
For either option, you will want to make sure that your reservations are linked to your
My Disney Experience account. Before you head out, also check out some
recent updates to the Walt Disney World Resort experience and don't forget to make your
Disney Park Pass system reservations!
I hope that this helped, Debra. Please come back here to the Disney Parks Moms Panel if we can help as you plan your magical vacation. We love to hEAR from you!
See you real soon!
Sarah B.