I have a child with a wheelchair, but we have never needed to park in handicapped parking spaces before (we just push her). Unfortunately, it is too heavy and awkward to get on the tram.
We just told the parking attendant our situation, and each time we were directed to park in the handicapped section.
I was a bit worried about getting a ticket, but the CMs assured me it would not be a problem.
Furthermore, if you look, the actual handicapped parking spots are not labeled or marked as handicapped (besides having blue stripes on the ground). There is none of the typical verbiage that you would see in a mall parking lot, for example, warning about needing a placard and the possibility of a fine.
This is certainly NOT to suggest that people without disabilities should misuse these spots, but to let you know that this is an option for special situations.