Family ski was the first game in the series. It's predecessor has gotten nowhere at all. It is still a good fun game however. One of its main features is the fact you can put your Mii into the game increasing the experience. also during the game there are plenty of different challenges to keep you busy. Also as it uses the balance board and Wii motion controls most of the time making it very uncomplicated. There are also some hilarious unlockables such as new skiis or boards, or new suits such as the penguin suit.
However the balance board doesn't really add much to the game as all you have to do is push your weight from one side to the other. When you're in the ski resort, you might want to put your volume on mute as there is some very frustrating music in the background. from bands that I'm not even sure are real.
If you have Family ski and are going to get Ski and Snowboard because of the snowboards in it, DON'T. The snowboards don't add anything to it except for the fact your balance board is now sideways.
Family Ski and snowboard is family friendly, has a good difficulty level and looks great. It's just not worth getting if you got the last one. A good game