What I do find amusing is: The mug is $15-ish OOP, right? So, if you're staying for 10 days, like we are, you're seeing an approx $50 increase in total cost, per kid, for the DDP. That's one expensive mug!
The price of the mug is such a phony thing. It's value is really totally different for each individual, ranging from worthless to gold.
It's like when an informercial says, "And we throw in the can opening... A $50 value, for free!" -- and it's 10-cent piece of plastic garbage.
Even putting aside that you can go to the supermarket and get a large bottle of soda for $1-$2....
Knowing that an individual soda at the food court costs about $2.50... It means that you need to refill the soda mug on 6 separate occasions just to break even at the $15.
Thus, I truly don't understand families that claim to have gotten tons of value out of the mug. I guess for people who spend lots of whole days at the resort, there is time to use the mug. But for people who spend most of the day in the parks, and are already getting beverages with their meals, I just don't see the opportunity to use the mugs all that often. I see it as a stretch just to "break even" on the mug value. (Grab coffee every single morning, and you'd break even. But then again, they give you a coffee maker to make coffee free in your room, so that's really still a loss.)