I deposited £20 with a Visa debit card, and £20 in bonus funds plus 50 free spins landed in my account within a minute. The offer is a 100% match up to £200 on your first deposit, with 10x wagering on the bonus amount. The Marriott Casino bonus range also includes 20 no deposit free spins, cashback of up to 10% on net losses, and a refer-a-friend reward.
Marriott Casino holds a UKGC licence, so bonus wagering sits at the 10x cap and you can self-exclude through GamStop. I tested each offer below with my own account, and I list the restrictions I hit alongside the numbers.
- Marriott Casino Welcome Bonus
- Marriott Casino No Deposit Bonus
- Marriott Casino Cashback Bonus
- Refer-a-Friend Marriott Casino Bonus
- Seasonal and Special Marriott Casino Promotions
- How to Use Marriott Casino Bonus Codes
Marriott Casino Welcome Bonus
The welcome package spreads across your first three deposits and totals up to £450 plus 75 free spins.
| Deposit | Offer Details | Wagering Requirements |
|---|---|---|
| First deposit | 100% up to £200 + 50 free spins on Book of Dead | 10x bonus amount |
| Second deposit | 50% up to £150 | 10x bonus amount |
| Third deposit | 25% up to £100 + 25 free spins | 10x bonus amount |
My £20 bonus carried a £200 wagering target (£20 x 10). Slots count 100% towards it, while roulette and blackjack count 10%, so table game fans clear the target slowly. Each part of the package expires 7 days after Marriott Casino credits it, which is tight if you only log in at weekends.
The minimum deposit is £10 by debit card, PayPal or Open Banking. Skrill and Neteller deposits do not qualify for the bonus, and I found that out only after reading the terms page.
Tip: Deposit the full £200 to claim the full £200 match. A £50 deposit returns a £50 bonus.
Marriott Casino No Deposit Bonus
Two codes give you free spins without a deposit, and you enter either one at registration.
| Bonus | Code | Game | Max Cashout |
|---|---|---|---|
| 20 Free Spins | MARRIOTT20 | Starburst | £25 |
| 10 Free Spins | MCSPINS10 | Fluffy Favourites | £20 |
Each spin is worth £0.10, so the 20 Starburst spins give you £2 of play value. I won £8.40 from mine. A £25 cap rules out a big payout, so treat this offer as a way to test the site before you deposit. To withdraw your winnings:
- Wager the winnings 10x
- Make a minimum deposit of £10
- Upload photo ID and proof of address
Note: Marriott Casino asks for ID before your first withdrawal. My documents cleared in about four hours on a Tuesday afternoon.
Marriott Casino Cashback Bonus
Cashback pays out each Monday on the previous week's net losses.
| Cashback Percentage | Eligibility | Frequency |
|---|---|---|
| 5% on net losses of £20 to £199 | Verified accounts | Mondays |
| 10% on net losses of £200 or more | Verified accounts | Mondays |
A £300 net loss returns £30. The maximum payout is £500, and Marriott Casino pays it as withdrawable cash with no wagering. Losses made with bonus funds do not count, and that removed £40 from my first week's total.
Warning: Check the terms before each promotion period. Marriott Casino changes cashback conditions during special events.
Refer-a-Friend Marriott Casino Bonus
You and your friend each receive a £20 bonus once your friend deposits £20 and wagers £50 on slots. Your referral link sits under My Profile in your account settings, and it took me two minutes to find it.
- £20 bonus credit for you and £20 for your friend
- 10x wagering on both bonuses
- A limit of 10 successful referrals per account
Your friend must register through your link. A friend who signs up through the main site does not count, and Marriott Casino does not backdate the reward.
Seasonal and Special Marriott Casino Promotions
Marriott Casino runs time-limited promotions around the main racing and holiday dates, plus slot tournaments throughout the year.
| Promotion Type | Current Offer | End Date |
|---|---|---|
| Prize Pool | £25,000 Slots Race | Resets on the 1st of the month |
| Tournaments | Slot leaderboards with a £5,000 prize pool | Close Sunday 23:59, restart Monday |
| Seasonal | Free spins drops during Grand National week | Set per event |
You opt in on the Promotions page before you spin, and spins made before opting in do not score. I joined a weekend leaderboard and finished 214th. Prizes stop at 100th place, so I won nothing.
Fact: Leaderboards rank you by your highest single-spin multiplier, so a £0.20 stake can beat a £5 stake.
How to Use Marriott Casino Bonus Codes
Marriott Casino bonus codes go into one of two fields: the registration form or the cashier.
| When to Enter | Where to Enter | Code Examples |
|---|---|---|
| Registration | Signup form | MARRIOTT20, MCSPINS10 |
| Deposit | Cashier, Promo code field | Codes sent by email |
| Existing account | Promotions page | Opt-in offers |
To use a Marriott Casino bonus code:
- Copy the code in capitals, because the field rejected my lower-case attempt
- Open the registration form or the cashier
- Find the "Promo code" field
- Paste the code
- Complete registration or your deposit
Important: Marriott Casino sends some bonus codes to existing customers by email, and these may require a previous deposit or recent activity.
Read the full terms before you claim any casino bonus code at Marriott Casino. The site voids bonus winnings if you stake more than £5 per spin while wagering, and it caps no deposit cashouts at £20 or £25. Set a deposit limit in your account before your first top-up. If gambling stops being fun, BeGambleAware offers free support and GamStop blocks access across UK-licensed sites. You must be 18 or over.