

The July 30, 2026 cruise on the Mariner of the Seas departs from Galveston, Texas. On this 4 Night Western Caribbean (Galveston Roundtrip) sailing, the ship will visit a total of 2 cruise port destinations, including its departure port. The Mariner of the Seas sets sail on Thursday, Jul 30th and returns on Monday, Aug 3rd.
The graph below tracks historic price of the Mariner of the Seas cruise ship departing July 30, 2026. The most recent price for this sailing starts at $645 ($162 per night) for an Inside Cabin. Compared to the average price of $709 ($178 per night), this represents a recent decrease of 9%.
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Mariner of the Seas - July 30, 2026 - 4 Nights
| Day | Date | Port |
|---|---|---|
| 1 | Jul 30th | Galveston, Texas |
| 2 | Jul 31st | At Sea |
| 3 | Aug 1st | Cozumel, Mexico |
| 4 | Aug 2nd | At Sea |
| 5 | Aug 3rd | Galveston, Texas |
The Mariner of the Seas sails on July 30, 2026 for a 4 Night Western Caribbean (Galveston Roundtrip). The ship will depart the port of Galveston, Texas at 4:00 PM and will return to the port of Galveston, Texas on Aug 3rd at 7:00 AM. During the 5-day journey, the Mariner of the Seas will visit 1 additional port and will spend 2 days at sea.
Based on my comprehensive research of cruise port safety information, including recent crime reports, travel advisories, Global Peace Index rankings, and specific port security concerns, we've created a "safety score" for each cruise port stop. The overall rating below represents a combined score for your specific cruise itinerary.

The Mariner of the Seas has a construction date of 2003 and a total size of 138,279 gross tons. The ship measures 1,020 feet (311 meters) in length. Mariner of the Seas is included in Royal Caribbean’s Voyager Class. At full capacity, the Mariner of the Seas holds 4,299 passengers. That includes 3,114 cruise vacationers and 1,185 staff members. The Mariner of the Seas total number of staterooms is 1,674.
To see how this compares, click through to see Mariner of the Seas age and stats vs all Royal Caribbean ships. There you’ll find graphs showing length, capacity, tonnage and more for this ship vs all in the fleet.
To check out the ship from top to bottom, click here for Mariner of the Seas Deck Plans.
Galveston, Texas, offers docking at Galveston Port. Travelers explore Moody Gardens and Historic Pleasure Pier. Excursions visit Houston’s Space Center. Local markets sell pecan pralines. The peak season, March to May, brings mild weather for coastal tours. Photography captures Victorian architecture and Gulf vistas. Dining onboard includes shrimp gumbo, a Texan favorite. Souvenirs, like cowboy crafts, are sold in ship shops. Briefings cover Texan history. Light clothing and sun protection suit the subtropical climate, while comfortable shoes enhance historic walks. Galveston’s coastal charm offers a vibrant American stop. Cruise travelers enjoy a mix of historic districts and scenic beaches, making Galveston an engaging destination for exploration. (126 words)
Take advantage of the many on board activites during your day at sea. You'll have more than enough to fill your day!
Cozumel, Mexico, offers docking at Cozumel Port. Travelers explore Chankanaab Park and San Gervasio ruins. Excursions include snorkeling at Palancar Reef. Local markets sell tacos. The peak season, December to April, brings warm weather for coastal tours. Photography captures coral reefs and Caribbean vistas. Dining onboard includes ceviche, a Mexican favorite. Souvenirs, like Mayan crafts, are sold in ship shops. Briefings cover Mayan history. Light clothing and sun protection suit the tropical climate, while water shoes enhance reef exploration. Cozumel’s coastal allure offers a vibrant Mexican stop. Cruise travelers enjoy a mix of ancient ruins and marine adventures, making Cozumel an engaging destination for exploration. (126 words)
Take advantage of the many on board activites during your day at sea. You'll have more than enough to fill your day!
Galveston, Texas, offers docking at Galveston Port. Travelers explore Moody Gardens and Historic Pleasure Pier. Excursions visit Houston’s Space Center. Local markets sell pecan pralines. The peak season, March to May, brings mild weather for coastal tours. Photography captures Victorian architecture and Gulf vistas. Dining onboard includes shrimp gumbo, a Texan favorite. Souvenirs, like cowboy crafts, are sold in ship shops. Briefings cover Texan history. Light clothing and sun protection suit the subtropical climate, while comfortable shoes enhance historic walks. Galveston’s coastal charm offers a vibrant American stop. Cruise travelers enjoy a mix of historic districts and scenic beaches, making Galveston an engaging destination for exploration. (126 words)