I know this has been debated many times, but currently the HAL FAQ page states the packages are limited to 15 alcoholic drinks daily:
The Signature and Elite packages have a daily limit of 15 alcoholic beverages, which includes all alcoholic beverages with a menu price of $15 or less (Elite Beverage Package), or $11 or less (Signature Beverage Package). The Quench Beverage Package includes unlimited non-alcoholic beverages and bottled waters 500ml and under. The packages exclude purchases made in the Mini Bar, Honor Bar, Chocolate Seduction, In-Room Dining, beverages purchased on Half Moon Cay and any self-service draft beer.