Hi Mary! I love that you (or someone in your travel party) are donating your hair to help those who have lost theirs to cancer. My daughter is doing the same, and is about two inches away from her cut! As a first step, I suggest you search under "locks of love", where you'll find all the information you need, including the guidelines for donating hair. The website is most helpful, and basically says you can get your hair cut anywhere and provides an address to mail your hair and form to submit.
There are several salon choices for your convenience while at Walt Disney World. The
Mandara Spa is conveniently located in the Dolphin Resort. You can also get your new do at the Casa de Belleza Salon
at the Coronado Springs Resort or at Periwig's Beauty and Barber Shop, located between Disney's Yacht and Beach Club Resorts.
Thank you so much for your generous gift!