Two Royal Caribbean International ships, head to head — specs, amenities, and what each one is genuinely better at.
Mariner of the Seas (2003) is the newer ship by 2 years versus Adventure of the Seas (2001). Mariner of the Seas is the larger hull at 139,863 GT (~2% bigger). Adventure of the Seas sails with fewer guests at double occupancy (3,114 vs 3,344).
| Spec | Adventure of the Seas | Mariner of the Seas |
|---|---|---|
| Year built | 2001 | 2003 |
| Tonnage | 137,276 GT | 139,863 GT |
| Guests (double occupancy) | 3,114 | 3,344 |
| Guests (max) | 3,807 | 4,000 |
Trophy marks the ship that wins each row. Smaller capacity = more space per guest.
Most autumn cruise sales inflate Guest 1 fares. We audited 10 live campaigns to find the 5 deals from $69/night that actually save money.
Norwegian advertises Free at Sea while Royal Caribbean charges upfront. We audited the family ledger on go-karts, dining, tips, and shows.
One man-made beach earns Royal Caribbean an estimated $600M a year. Which private-island days are worth leaving the ship — and which are traps.