6 Night Western Caribbean & Perfect Day
Royal Caribbean • Adventure of the Seas
Oct 30, 2026 · 6 nights
Mexico
$489/person$81/night
View DealShip comparison
Adventure of the Seas vs Mariner of the Seas
Side-by-side cruise ship comparison. Mariner of the Seas wins 4 of 7 scored categories.
At a glance
Quick Compare
Category
Adventure of the Seas
Mariner of the Seas
Size
137,276 GT
139,863 GT
Passengers
3,114
3,807
Year built
2001
2003
Crew ratio
2.6 guests per crew
3.2 guests per crew
Space ratio
44.1 GT per guest
36.7 GT per guest
Decks
No data
No data
Length
311 m
311 m
From price
$354.01 pp
$329.05 pp
The verdict
Comparison Verdict
Adventure of the Seas offers more personal space with a space ratio of 44.1 GT per passenger versus 36.7. Built in 2003, Mariner of the Seas is 2 years newer, an advantage for travelers seeking modern amenities and design. Adventure of the Seas edges ahead in service at 2.6 guests per crew, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Mariner of the Seas |
| Capacity | Mariner of the Seas |
| Modernity | Mariner of the Seas |
| Service | Adventure of the Seas |
| Spaciousness | Adventure of the Seas |
| Decks | No data |
| Length | Tie |
| Fleet Power | Mariner of the Seas |
Bottom line: Mariner of the Seas leads 4–2 across our categories, strongest in Size. Choose Mariner of the Seas for overall superiority; pick Adventure of the Seas if Service matter more to you.
Decide
Which Ship Is Right for You?
Choose Adventure of the Seas if
- More crew per guest (2.6 guests per crew)
- More space per guest (44.1 GT per guest)
- Lower fares per night (from $51 per person per night)
Choose Mariner of the Seas if
- You want the newer ship (built 2003, 2 years newer)
- Size matters to you (139,863 GT)
- More onboard variety (3,807 guests)
Prices
See Current Prices
You have compared the ships. Now see what they cost.
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Fares
Sailing Prices
| Detail | Adventure of the Seas | Mariner of the Seas |
|---|---|---|
| Cheapest | $354.01 pp | $329.05 pp |
| Per night | $59 pp | $55 pp |
| Departing | Nov 15 | Nov 1 |
| Duration | 6 nights | 6 nights |
| View sailing | View sailing |
Prices from Cruisebound, per person, for the sailing shown.
Go deeper
Deep Dive
Sailings
Upcoming Sailings
Upcoming Sailings on Adventure of the Seas
8 Night Eastern Caribbean Cruise
Royal Caribbean • Adventure of the Seas
Nov 7, 2026 · 8 nights
Caribbean
$407/person$51/night
View Deal
6 Night Western Caribbean & Perfect Day
Royal Caribbean • Adventure of the Seas
Nov 15, 2026 · 6 nights
Caribbean
$354/person$59/night
View DealUpcoming Sailings on Mariner of the Seas
6 Night Western Caribbean Cruise
Royal Caribbean • Mariner of the Seas
Nov 1, 2026 · 6 nights
Caribbean
$329/person$55/night
View Deal
$719/person$103/night
View Deal7 Night Western Caribbean Cruise
Royal Caribbean • Mariner of the Seas
Nov 14, 2026 · 7 nights
Caribbean
$466/person$67/night
View DealHotels & Accommodations Near Port of New Orleans
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FAQ
Frequently Asked Questions
How is the comparison score calculated?
We score 8 categories from spec data: size, capacity, modernity, service, spaciousness, decks, length and fleet power. Each category awards one point to the winning ship. A category where either ship has no data is marked No data and left out of the score.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40, and mass-market ships often fall between 30 and 40.
What does the passenger-to-crew ratio mean?
It is the number of guests for each crew member, shown as "3.0 guests per crew". Lower is better: more staff per guest usually means more attentive service. Luxury lines aim for fewer than 2 guests per crew, and large mainstream ships often carry 3 to 4.
Are the prices shown accurate?
Prices come from Cruisebound and are per person for the sailing shown. They change with cabin type, date and demand, so open the sailing to see the current fare.
Can I compare more than two ships?
Yes, up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ ships, and this page refreshes daily. An "Updated" date appears at the top when either ship's record changed in the last 30 days.
