Here's how to use Promo Code when shopping at Say No To Slow: Add new items to your cart and click Place Order. Log in to your account at saynotoslow.nz or create a new one. Then, click Pay, select the corresponding available Coupon Code, and select your preferred payment method. Please note that each Say No To Slow Coupon has its own rules of use, if your order is eligible for saynotoslow.nz, it can be used.