How our Bliss Filters work
Detailed side-by-side comparison of Royal Caribbean and Costa Cruises cruise ships
| Specification | Allure of the Seas | Costa Diadema |
|---|---|---|
| Cruise Line | Royal Caribbean | Costa Cruises |
| Maiden Voyage | 2010 | 2012 |
| Year Refurbished | 2015 | N/A |
| Adults Only | No | No |
| Specification | Allure of the Seas | Costa Diadema |
|---|---|---|
| Passenger Capacity | 5,400 | 4,947 |
| Crew Size | 2,384 | 1,253 |
| Guest-to-Crew Ratio | 2.27 | 3.95 |
| Specification | Allure of the Seas | Costa Diadema |
|---|---|---|
| Gross Tonnage | 225,282 | 132,500 |
| Length | 1,187 ft | 1,004 ft |
| Width | 198 ft | 122 ft |
| Ship Size Category | Mega | Mega |
| Number of Decks | 16 | 20 |
| Specification | Allure of the Seas | Costa Diadema |
|---|---|---|
| Overall Cruiseable Rating | 9.0 / 10 | 8.0 / 10 |
| Roominess Score | 35.6 | N/A |
| Advised For | Party, staterooms, families, entertainment, spa and fitness | Families, entertainment |
