Offer valid for one free Shake with any purchase per sender and per receiver when filling out and sending a form through johnnyrockets.com/sendasmile from 5/1/23 – 5/31/23. Free Shake offer will be sent via email 24 hours after submitting a form from johnnyrockets.com/sendasmile. Free Shake offer expires 14 days after receiving the offer. Free Shake valid in-store only with any purchase at participating locations only. Not valid for online orders or through third-party delivery. Offer not valid on Craig's Vegan Shakes. Must present email in-store with the unique offer code to redeem offer. Sender is automatically opted-in to receive emails from Johnny Rockets. One free Shake offer per transaction. Cannot be combined with other discounts, offers, or coupons. Menu offerings and pricing vary by location.