Kandersteg should not be advertised as a ski resort. There are simply not enough pistes for any level of competancy. The three blue pistes are very short, there are virtually no appropriate areas for absolute beginners, and the only red piste has two slopes on it. There are no black pistes. Overall, an average skier would spend no more than 2-3 hours there without becomong totally bored. We were forced to take day trips to Lauchernalp, and Adelboden before we could feel like being on a ski resort. The is absolutely nothing to do after the pistes have been crossed. Recently, the ski pass that would allow use of Lauchernalp and Kandersteg has been revoked so that if you want to ski in Lauchernalp, you will have to spend a lot of money on a second ski pass.
The ski resort in Kandersteg has some Draconian laws. For example, if you are unfortunate enough to have bought a six day pass, and then realised the lack of skiing ares, they will not refund any of your money.
My advice is to forget Kandersteg for skiing at the moment. Go to Adelboden instead. This will save you from a huge disappointment and be cheaper in the long run.