I have not listened either yet, and I definitely agree that there needs to be more restrooms designed with families in mind. Speaking for myself, I try not to used the accessible restrooms if I can help it, but when I'm by myself with two kids under 5 and a double stroller, there's nowhere else for me to go if the companion restroom is occupied. If my husband is not with me (and I imagine its the same for single parents) I'm not yet comfortable leaving one or both of them outside the restroom if only one has to use it, or if I do. I have to take them both in with me and its next to impossible to fit 3 people inside one of those tiny stalls. So, if I was in an accessible restroom stall with my two kids and someone was waiting for it, I totally apologize. At this time though, my kids safety is #1, and if that means we have to use it once in awhile so that I don't leave my young child alone outside the stall then I will.
Let's hope Disney recognizes a need for single parents with more than one young child and designs larger restrooms in the future.