The LED candles are meant to be used to enhance the mood of the game and act as your status indicator. Your candle begins "Lit", but if you go "Lights Out," then you would turn your candle off. This status is normally handled in the game by flipping your Status card. The LED just makes it more fun.
You order your add-ons in the pledge manager after the completion of the Kickstarter campaign. You can choose to add the money for add-ons to your Kickstarter pledge, or you can wait until you fill out your pledge manager survey to select and pay for your add-ons when you pay for your shipping
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