They will LOVE it! no question, each day a daily itineray is issued for each age group detailing in half hourly breakdowns what is going on that day, the days tend to be themed and they make full use of the ship including pool games, activities on the sports deck etc. There are an abundance of games consoles which didnt appear to get much use due to a wide variety of other activities. ALL the kids from babies to teenagers had a fantactic time when we were onboard, and I wouldnt worry too much about them being in different groups they wouldnt notice each other after a day or so anyway with all the other kids. I cant remember the price of soda cards but it gave you a few free drinks, not unlimited for the cruise like other lines.