No there is no help at rental car agencies for disassembling or loading
scooter, luckily my husband is able to do it for me. you might be better off to rent an accessible vehicle or take accessible transport to the parks.
Are you staying onsite once you are there?
bell men will lift scooter out of vehicle for you but not put it together.
The other good option is to Rent the
ECV to be delivered to your resort rather than bring your own.
I use Walkermobility.com for that myself. On my trip in May I am bringing one scooter and renting one.