Normal
Work out an agreement with your teens. How much per day they will be allowed. Extrapolate that out to cover the entire cruise. When you set up your account, do not put your kidlets on your sign & Sail card. Pay cash, in advance, for their accounts. When they blow through it (and they will) ... it's gone. They'll just have to live on water, iced tea, fruit juices, lemonade and milk ......
