Wheelchair at Port Canaveral terminal

[4plutofans]

I will be cruising with my mother who has mobility issues. Can anyone please share their experience using Disney's complimentary wheelchair in the terminal? I realize it is not for use on the ship, but it will be very helpful to have during embarkation and disembarkation. We will be driving ourselves to port. I am mostly wondering if I will need to leave her in the car and retrieve a wheelchair after I park, or is there a suitable place to drop her off after the luggage drop off? I am assuming we would have use of the chair until right after boarding, and then a cast member would remove it from the ship? I appreciate any clarification.
Thanks so much!