Mariner of the Seas: Sanitation Record & Health Report

Let's be honest: the Mariner of the Seas is the cruise ship equivalent of that one friend who peaked in their early twenties, did a solid glow-up a few years back, and has been coasting on the compliments ever since. Launched in 2003 as part of Royal Caribbean's once-revolutionary Voyager class — the ships that introduced landlocked concepts like ice skating rinks and rock climbing walls to the open ocean — Mariner got a 2018 makeover to keep things fresh. The result is a ship that feels reasonably current without being cutting-edge, which, for 139,999 gross tons of floating city, is genuinely fine. It scored a 93 on its CDC inspection, which clears the passing threshold of 86 with room to spare, though it does land a touch below the fleet-wide average of around 95. With only one inspection on record, there's not much of a trend to read into — it's basically a debut performance, and the debut was pretty clean.

What you're getting here is the classic Royal Caribbean Voyager-class experience: a massive, activity-packed ship designed for people who want options. Fifteen decks, over 3,100 passengers, and a crew of nearly 1,200 keeping the whole operation moving out of Port Canaveral. It's not intimate. It was never meant to be. The Voyager class was built on the premise that more is more, and Mariner leans into that fully. If the ship has any sins, they're the sins of its era — a little dated in ambiance despite the refresh, and perpetually crowded in the way that only a ship carrying three thousand of your closest strangers can be.

Who it's for: Families who need something for everyone, first-timers who want the full mega-ship experience without paying for the newest Royal Caribbean flagship, and anyone who considers a functioning ice rink at sea a legitimate vacation selling point. Who should skip it: Couples looking for something romantic and unhurried, anyone who breaks out in hives near buffet lines at peak capacity, and anyone who has sailed Mariner's newer Voyager-class siblings and expects a significant upgrade — you won't find one here.