Read on to learn more about the exciting Caesars sign-up bonus and the various other Caesars Sportsbook promotions you can claim today. You can also receive weekly bet credits, odds boosts, profit boosts, parlay offers and a refer a friend bonus, along with access to the Caesars Rewards loyalty program. Caesars Entertainment has spent millions of dollars on promos since buying William Hill and rebranding it as Caesars Sportsbook in 2021.