The only form of promotion land-based casinos offer is the loyalty program, which varies from one operator to another. Online casinos, on the other hand, offer much more promotions.
First, every online casino has at least one deposit bonus which you can use to increase your chances. While the system is simple (deposit an eligible amount and receive a predefined percentage), we recommend you read the terms and conditions of any bonus before activating it.
On the downside, online roulette games generally have higher rollover requirements than most other casino games (especially slots), but they are still one of the games through which you can clear a bonus with ease.
Another point to note is that roulette (offline and online) have some of the highest house edges in the casino world. This means you will need to wager more than you would with say slots or blackjack. To counteract this, online casinos set up smaller wagering or rollover bonus requirements for roulette, especially live dealer roulette, when compared to other games. Hence, you will spend much less time playing roulette than you would when playing baccarat or blackjack in clearing bonus terms and conditions.
For example, many online casinos set up bonuses that depend on which game you play. Games with low house edges (blackjack as a prime example) may have 50x bonus wagering requirement, which means you have to roll over the bonus amount 50 times. On the other hand, roulette—because of its high house edge—may have a bonus wagering requirement of 10x, so you only need to wager 10 times the bonus amount.
Alternatively, some casinos use contribution percent. This simply means what a game contributes is different from what anyone contributes. For instance, a casino could have a wagering requirement of 50x on their 100% deposit bonus.. With that, slots may contribute 100% (so $100 counts when you wager $100), roulette 20% (so $20 counts when you wager $100), and blackjack 2% (so $2 counts when you wager $100). Hence, it would take you less time to meet the requirement while playing roulette than blackjack.
Also, offline roulette rewards you with comps in form of hotel accommodations, dining, shopping, or any other non-cash reward—mostly discounts and special offers. With online roulette, you are up for comps that are paid in cash based on the amount wagered, not the amount won or lost.
As a win for offline roulette, most land-based casinos comp players fairly generously for playing roulette because the game helps the casino win a significant amount of money due to the high house edge.