I don't drink coffee, tea or alcohol. I love my soda and I like it free
In this case I am probably not much different from most kids on a
Disney cruise. A free fountain station where your kids can go themselves and drink as much as they like. It might not save tons of money, but I do see the convenience for parents.
But let's calculate, average for a soda on other cruiselines is about $3 per soda. Let's make that $3.33 for a soda and 3 sodas per day, that makes $10 per day per kid, if there aren't any package deals or flat amount for the entire cruise. For a family with 2 kids that is $140 just in sodas on a 7 night cruise.