Want to add a simple coupon field.
Clients want to run a promo with a single coupon code. If a shopper enters the correct code they will upgrade them to second day shipping. I don't need this to reflect anywhere in the product or shipping prices, the client will be handling this. All I want to do is add a single text input field to capture the promo code and let shoppers know if it's accepted or denied....but obviously I don't want the field to be "required".
The field would then pass onto the various confirmation emails so the store owners know who to upgrade (it would even be ok for an invalid code to pass through I guess, because they can make the distinction of valid promo codes on their own).
Trying to rush this since it's a promo running for Mother's Day. Suggestions?
One more question: What is the best method for testing things like this when the site is live? I obviously don't want to change the checkout template prior to testing. Thanks!