I think it really depends. In Sept, DS and I were on Dumbo. I noticed a woman and her tiny one, who were waiting for her hubby and bigger kid (who were on Dumbo), move from one spot to the other, and they suddenly had dream ears and two in her hand for the ones on Dumbo. (I was really bored on Dumbo b/c if I focus on it I feel ill, so I was people-watching while DS made us go up and down)
I noticed where the Dream people were, and signaled to DH (on the ground) to go over there (others were doing the same). DH went, with stroller chock-full of "I have a family" obviousness, and they REFUSED to give him even one, even though they had them, b/c they had decided that they were for families. Who were present.
Even though they had just handed a woman and her sleeping baby FOUR ears while the rest of her family was on the exact same ride as we were...
They have the Power to choose what happens each time, and it's not always going to be the same, or fair.