ViviF

This is the first time my family will be on a cruise (kids are 9 and 12). I've done some research but I feel like there is so much I don't know. We will be sailing July 9th on Explorer or the seas to the South Caribbean. Hubby and I were looking into the beverage package (we don't drink enough to justify the alcoholic package, we figure we can just purchase an alcoholic drink if we want). Do I need to purchase a beverage package for everyone in our stateroom? My youngest only drinks milk and water so it would not be worth it for her. If you've been on a cruise before is there anything you wish you would have known or someone would have told you? Thank you!