Yes. It will definitely help. We highly recommend doing some sort of ski and snowboard exercises before your camp with us. A certain level of cardiovascular fitness and strength is needed if you want to make the most out of every day on the slopes. There are several exercises that you can do to strengthen up your body. Your main lower body focus should be on your quads, glutes/hamstrings and calves, however a strong core is also quite important. You will be fit when you arrive instead of out of breath and sore muscles. These following links are just two of many winter workouts out there. They are recommendations and not mandatory.
Winter Snowboard Workout – A good video with several snowboard specific exercises to get you pumped.
Winter Ski Workout – A good video with many ski specific exercises to get you ready.