I actually saw this happen last year while staying at POR. I was amazed while watching the father ( I guess) fill one Disney mug then go back to the table and empty it into a big styrofoam cup--he then went back to the drink station and did that three more times. My thought was that I was glad I was fortunate enough not to have to do that.
I fail to see the issue here. The father was using a refillable mug so he has unlimited refills. I am glad I am fortunate enough to not be a nosey person and watch what other people do at the drink station.

