If you want free alcohol or mocktails, gamble in the casino and order while playing. Celebrity gives you free drinks while you are actively gambling with your players card in the machine. The bar server will take down your room number and ask you if you have a drinks, package, and you just say no. This was advertised every day of our cruise
drinks that are always free are coffee, tea, filtered water, orange juice, lemonade, and fruit juice, though some of those are only available at certain times.