If you are staying on site, that sounds like the type of thing that you can get help from WDW Resort Special Reservations at (407) 939-7807 (voice) or (407) 939-7670 (TTY).
Lifts are not listed in the items thye provide, but I am sure you are not the first to have the question.
If they can't help you, here is a list of medical equipment suppliers:
CARE Medical Equipment - 1-800-741-2282 www.caremedicalequipment.com
RANDY'S Mobility in Kissimmee 407-892-4777
Walker Medical - 1-800-334-9501 www.walkermobility.com
Good luck and hope things work out well for you.
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