For the CBP, the max per drink cost is $10.00. Any drink over the $10.00 max with the CBP you pay the difference of the drink plus 20% gratuity. We book our Celebrity cruises with the AI package. Cost varies. Length of cruise, stateroom type. Two types of AI packages. Both come with gratuities, and WI-Fi. One package is the Classic Beverage Package and the other is the Premium Beverage package.