I'm not sure "worry" is the correct word...I think its obvious reading these boards that it annoys the daylights out of some people. Keep in mind that if the "rule" is the mug is for "that visit only" and someone brings it back again and again and again, then basically they're stealing from Disney.....and that means that Disney has to keep raising the prices, so in essence it does make a difference to others. Same as when some punk steals food from the store....YOU are eventually going to be paying for his food because the store will have to keep raising prices to make up for the food that has disappeared.
For me...don't care about the drinks cause we don't drink soda...so as long as they don't start charging for a cup of ice and water, I'm good. But, yeah, it can be annoying to know that others are cheating the system and that I'm going to eventually have to pay for them......same frustration I feel over those who cheat the tax system.....or those who use the ER because they don't have health insurance, because that makes my ridiculous health insurance price go up, and my taxes too...so double whammy, because someone thinks they deserve something the rest of us don't. Same frustration many feel when they spend an hour staking out a spot for the parade and some idiot shoves his way with his kid into your spot. Or those who make 5 ADRs for the same day because they don't know when/where they're going to want to eat, so they make a bunch to keep their options open....but that means the rest of us can't get a reservation at these places....and when they don't show up at 4 of them, Disney has empty tables....which means higher prices eventually because they had employees standing around, and food that may be wasted.
I think the point is, I doubt people spend their vacation obsessing over all this...but they certain seem to get annoyed about it.
hmmmm...and I guess we could say the same about you rustyanchor....because it apparently bothers you that people are annoyed about this, or you would have just moved on to another thread instead of made a rude comment, lol.