Free Club Royale cruise, real cost: port fees, gratuities, cabin category.
The cruise is free. The booking page disagrees.
The offer email says the cruise fare is comped. You pick a sailing, open the booking flow, and there's a balance due before you've looked at a single shore excursion.
That balance isn't an error. A Club Royale certificate covers cruise fare for the category it names, and Royal Caribbean bills everything else on separate lines: taxes, fees and port expenses per guest, plus gratuities per guest per night Certificate excludes additional cruise fare, taxes, fees, port expenses, gratuities, and fuel surcharges; guests pay these separately. (source).
Most players know this. Far fewer write the number down before they commit a certificate to a sailing.
The comp headline gap
Call it the comp headline gap. It's the distance between what the offer email implies you're getting and what actually leaves your card.
The gap has two parts. The first is money: the fee and gratuity lines don't shrink because the fare is comped, so a cert sailing carries the same per-guest charges a cash booking would. The second is the room. On a lot of Prime-level certificates, the category is a guaranteed interior Royal Caribbean's official Club Royale page states Prime-level members receive a complimentary interior stateroom on one cruise each year. (source), which means Royal Caribbean assigns the cabin and you don't choose it.
So the honest value of a cert is narrower than the headline. And that's fine, as long as you price it that way.
Why "worth $X" is the wrong number
The usual way a cert gets valued is the fare shown on the booking page, often for a nicer cabin than the one the cert actually lands on. That overstates the comp twice over.
It compares against a room you weren't getting. A guaranteed interior on a given sailing prices well below the balcony in the promo image, so the fare you're saving is the interior fare, not the balcony fare.
But the error runs the other way too. Players who get burned by a surprise fee total sometimes swing to calling certs worthless. That's also wrong. Comped fare on a busy sailing can be a serious amount of money, even for an interior. The fix is the right baseline: cash fare for the same sailing, same category, same guest count, compared against everything you'll pay on the cert.
What the threads keep arriving at
The Points Guy has run the math on comped casino certificates before, and the framing matches what Club Royale players have been working out on their own. On the Cruise Critic Club Royale forum, the recurring Prime thread is some version of "my cert only offered a guaranteed interior, is it still worth booking?" For Prime, the Casino Royale certificate is for a cruise for 2 in an Interior cabin, upgradable for a fee (source). Facebook Club Royale groups run the same argument about port fees on repeat.
Nobody in those threads disputes that the fare is comped. The fight is always about the other lines, and about which cabin you end up in.
Laid out as a ledger, most lines on a cert booking look exactly like a cash booking. The certificate only changes the fare line and takes away your choice of room.
Running a certificate the right way
Start with the cert's booking quote. Take the taxes, fees and port expenses line exactly as quoted for your guest count, since it varies by itinerary and port mix.
Then add gratuities: the daily rate times nights times guests. Royal Caribbean's daily gratuity for standard (non-suite) staterooms is $18.50 USD per guest, per day. (source). That's your cert cost.
Now price the same sailing as a cash booking, in the same guaranteed category, for the same guests. Subtract the cert cost from the cash total. What's left is the comp headline gap closed: the real savings.
Run the math on your own cert before you book. Pull the quoted taxes and fees for your cabin, add gratuities for your nights and guest count, then compare that total against a cash quote for the same guaranteed category on the same sailing. The gap between those two numbers, not the sticker price on the offer, is what the cert actually saved you.
Two things tend to move the answer. Short sailings, because the fees don't shrink in proportion to the comped fare. And upgrades, because paying up out of a guaranteed interior spends real money against the savings you just calculated.
What changes once you run the ledger
The certificate is still usually worth using. We'd book most of them. But the ledger changes which ones you book and when.
A cert on a longer sailing with a strong cash fare often clears a real gap. A cert burned on a short sailing just to use it before expiry can come out thin once the fees and gratuities land. And a cert you upgrade out of the guaranteed category can quietly turn into a discounted cash booking.
The practical move: don't decide from the offer email. Decide from the net number, next to the cash fare, before the cert's expiry forces the call.
Seeing net cost instead of the comp headline
The ledger is simple. Keeping it current across a stack of offers isn't. Most players end up with a spreadsheet, a folder of offer PDFs, and a handful of screenshots, and the net cost lives in none of them.
SailQuery's dashboard puts the net cost next to the comp headline for each offer, so a Prime cert on one sailing and a different offer on another sit side by side on the number that matters. Expiry dates sit right there too, which is the other half of the decision.