P&O
Iona
Each Cruise Critic review is re-centered on its reviewer's own rating baseline before the ship is ranked. Cohort: P&O.
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Photos
Ship at a glance
Entered service
December 2020
Ship type
mega ship
Passengers
5,200
Typical voyage
7-night
For kids
good
Registry
Bermuda
Entertainment onboard
- theater productions
- multiple restaurants
- bars and lounges
- casino
Room categories
- Interior
- Oceanview
- Balcony
- Suite
Family features
- kids club
- family activities
- kids dining
Ship specifications are AI-curated from public sources and confirmed against P&O marketing copy. Rankquant's 44th percentile is computed independently across 78 z-qualifying Cruise Critic reviewers — see how percentiles are computed.
Life onboard
What it actually feels like to sail Iona— entertainment, food, and the crowd you'll find onboard.
Entertainment
You'll find a busy roster of evening productions in the main theater—theatrical shows with live bands, comedy clubs with touring comedians, and a nightclub that stays lively past midnight. During days, street performers and acoustic musicians pop up in corridors and lounges, and there's usually a karaoke or trivia session running somewhere. The vibe skews accessible and participatory rather than elaborate, with entertainment that works equally for families and groups.
Food & dining
The main dining room offers a traditional fixed-seating experience with nightly menus ranging from acceptable to decent, while specialty venues scatter around the ship—an Asian fusion spot, a steakhouse, a Mediterranean grill—each with a modest cover charge. The buffet is expansive and reliably stocked, though peak breakfast and dinner hours create crowding. Fresh pasta, seafood stations, and properly executed classics stand out; don't expect fine dining but you won't feel shortchanged.
Atmosphere
Iona caters to multi-generational British families and retirees who want contemporary cruise comfort without formality—think smart-casual rather than dress codes. The ship balances supervised kids' clubs and family zones with adult-only pool decks and cocktail bars, so you can cruise with grandkids and still find quiet corners. The overall tone is inclusive, laid-back, and unapologetically British, with a modern-casual energy that feels like cruise vacationing for people who cruise regularly.
The ship & service
A closer look at P&O as a line, Iona as a ship, and the service and deck quality to expect onboard.
- The line
- P&O Cruises is a mainstream British line aimed at UK guests who want familiar food, sterling pricing, and departures from Southampton without flying. It sits in the mid-market tier alongside the likes of Princess and MSC, best for British families, couples, and retirees who prefer a relaxed, unstuffy atmosphere over formal luxury or American-style mega-resort cruising.
- The ship
- Iona is one of P&O's newest and largest ships, a 2020-built mega-vessel carrying around 5,200 guests, so it feels expansive and resort-like rather than intimate. As a modern LNG-powered ship in the Excellence class, it leans into contemporary design with a multi-deck atrium as its social hub and a broad spread of bars, lounges, and family zones across the upper decks.
- Service
- Service is solid mainstream-tier rather than personal or anticipatory; with passenger numbers north of 5,000 and a typical mega-ship crew ratio, expect efficient, friendly delivery in dining rooms and bars but queues at peak times and limited recognition outside of loyalty-tier guests. It is high-volume hospitality done competently, not bespoke attention.
- Decks & spaces
- As a 2020 build the ship still feels current, with multiple pool decks including adult-only zones, a wraparound outer promenade area, and a tall central atrium used for daytime performances and evening drinks. Materials and finishes are contemporary mainstream-tier rather than premium, and general upkeep is good given the ship's relatively young age and no major refit yet required.
How the score was built
We compare the reviewers of this ship against every other ship those same people sailed and rated. Each review is scored relative to the reviewer's own baseline — four stars from someone who hands out fives means something very different from four stars from someone who rarely goes above three. Every reviewer then counts the same, so the result is a calibrated consensus rather than a star average.
- Global percentile
- Where Iona lands against every ship we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — the other ships in the same fleet, so a line's budget hull is judged against its own sisters rather than against a luxury expedition ship. Ranked against P&O (8 ships).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each ship keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 78.
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