The Grubhub x Taco Bell Cantina Instant Win game offers a chance to win a $15 discount on a Taco Bell order of $15 or more, redeemable via Grubhub. The promotion runs daily, starting each day at 11 AM ET, with 200 codes available per day. Participants can enter daily until April 28, 2024. The promotion codes expire at the end of the day they are awarded.