You might check back because their website lists a lot of options including a lift chair. The resort should have a shower chair. I would have thought the resort would have a wheelchair as well (first come). I'd call Burkes back during the day during the week and talk to a manager so you know for sure. If they don't have it, ask them for other recommendations. I'd check back withs the resort on the shower chair, all the resorts we stayed at with this need had them.
Putting myself in your situation, I'd try
http://www.bme4u.com across the bridge, there may be others. I'd also call and talk to the hospital there asking for the discharge planners for neurology and/or orthopedics plus the physical therapy department if you get that far without an answer. If non of these yield results keep digging, ? looking at Savannah.