I can't recall, do any other lines have daily limits?
The thing I like about Royal is that, by being Diamond with them, they put 4 free drinks on your card/account every day - to use where you please. In addition to that, booking in a suite, I can get wine/beer throughout most of the day in the suite lounge - and, from something like 5-7pm (or 8?) they'll include mixed drinks in there too. With that scenario, I'd be hard pressed to consider adding in a drink package !
Celebrity is much the same - though booking a suite with them generally includes a premium beverage package to begin with, so...
Yep - to some degree, the cost of those "included" drinks on both of those lines are built into the cabin pricing. I can see if someone is not a drinker, that they might feel they're paying for something they're not receiving any benefit from.
Tom