No you do not. But it makes the game experience better. If you don't believe me,look on the back of the game,it says:"Wii Balance Board Optional.
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The Wii Balance Board/ Wii Fit Board comes with one game that has tons of fun mini-games, and exercises to enjoy. Other games that use the Board inlcude: We Ski & Snowboard, EA Sports Active, We Ski / Family Ski , Jillian Michaels' Fitness Ultimatum, Raving Rabbids TV Party. These games are all currently avaible, and more will be coming soon.
no, don't need it.
My Wii Balance Board works fine on carpet.
you reset the wii and it'll reset the wii balance board
Well, yes and no. If you DON'T have a balance board, then no. But if you do have a balance board, you can. There is certain games that can.. for example: Jogging and some of the Yoga things. Hope I helped :D