Bettors get a bonus bet up to $1,000 when they use the Casears Sportsbook promo code SBBONUS1000. If you win your first bet, you keep the winnings and do not need the bonus bet. Caesars gives you a bonus bet up to $1,000 if you lose your first bet. In either case, you will receive 1,000 Reward Credits and 1,000 Tier Credits.