Hi, Maria!
I am happy to hear you are planning a vacation to Walt Disney World! Hopefully I can help you get a perfect room for your stay.
I do not know if you are looking to stay for end of February or end of March. I checked both, and while some resorts are booked, others were available for both months. To try for more availability than you are finding, make sure to select different offers. The number of rooms with
Special Offers is limited, so try clicking "room only" or "package" to see if different options become available.
Also,
try a new resort! You might not get your first resort choice, but try a new location and you just might find a new family favorite. Being flexible on view/room location will also help.
If you continue to find no availability online, call a friendly cast member at (407)939-7639. Have your dates handy and see what magic he/she can find for you. If there is really absolutely not one room for you, perhaps you can check out the
Swan and Dolphin Resorts. While not Disney owned resorts, they are located on Disney property on the Boardwalk, and guests receive some of the same perks as Disney resort guests (read their fine print for details).
I hope you find a wonderful room for your late winter/early spring get-away!
Cathy