Welcome to disABILITIES. We are DVC members at OKW and hope you enjoy our "home resort:.
My DD also has CP. but we don't need any extra supplies at WDW.
Some options you might want to consider would be:
-ask your current supplier if they have previously worked with any medical companies in the Orlando area. Their supplier of ultracal would be able to find out who they supply ultracal to in that area.
-I know some people ship supplies down to themselves at their hotel.
-These companies are full service medical equipment suppliers and should provide the same type of care you are used to at home:
Care Medical:
http://www.caremedicalequipment.com/
Walker Mobility:
1-888-726-6837
www.walkermobility.com
Colonial Medical
http://www.colonialmed.com/about_cms.html
The wheelchair is always a concern, but we have been lucky and had only one piece of damage in lots of trips with DD's wheelchair; a bent antitipper. My DD's does fold up, but you need to take it apart to do it, so we don't usually take it apart. Before the trip, we usually recheck all screws and bots to make sure they are tight. We also carry along a tool kit and extra bolts/screws in case things loosen up on the trip. We pack the tool kit in the checked bags. Other people have had good luck with asking for help from their WDW resort maintenance department.
Before getting on the plane, I usually remove the seat and bring that on the plane. If I'm feeling really energetic, I also take off her swing away footrests (since they seem to be a tempting, but not good, place for people to try to lift the chair). I fasten any belts that are left on the wheelchair to keep them from getting caught. I have seen a wheelchair once that came off the plane with the seatbelt wound around the axel - not a pretty site.