Not trying to be argumentative, just legitimately asking....how can you tell when somebody has a disability you cannot see? I am asking because you laughed about it.
I never use it as a crutch, but I live with a neurological disorder that nobody would see when looking at me, other than intermittent tremors. I look fine on the outside, but what I feel inside is a completely different story. I do not use it to my advantage, but when I need to sit, I am sitting. When it is better to stand, I am going to stand. I am not selfish, but I do care about being comfortable and managing pain. My pain level is a disability. Having children is not a disability.
Does everybody fit this? No. In general, Disney has the most entitled people on the planet, so I know that entire bus did not have people with disabilities, but how do we know when that is the case and when it isn't?