Yes Soft drink package for Kids & wine packages for adults. I don't know the current prices. cruiseclues.com will show you Bar lists for NCL ships (any NCL ship will do) but be advised the prices may not be current.
We have cruised with NCL twice, the last time being August 2007. There was a soft drinks package that was priced differently for adults and children - my son, aged 14 at the time, was charged the adult price ($75 from memory for the week). I can't recall a wine/alcoholic drinks package but this may have changed. One thing we found on the NCL ships is that if you have a drink in a speciality glass (they push these with cocktails), the price goes up by almost double - although you may want to bring a glass home they are cheaper to buy in the on-board shop. Drinks on the whole on the NCL line are fairly expensive. The ships are lovely though and you will have a wonderful time.