Cruise Net Per Diem: Monetization per Passenger Cruise Day

Cruise net per diem measures adjusted gross-margin economics per passenger cruise day.

Norwegian Cruise Line Holdings defines Net Per Diem as:

1Net Per Diem
2= Adjusted Gross Margin ÷ Passenger Cruise Days

The metric asks how much adjusted gross-margin economics the operator generated for each passenger-day actually consumed.

Net per diem differs from net yield

The numerator can be the same while the denominator changes:

1Net Per Diem
2= Adjusted Gross Margin ÷ Passenger Cruise Days
3
4Net Yield
5= Adjusted Gross Margin ÷ Capacity Days

Suppose adjusted gross margin is $1.0 billion, passenger cruise days are 4.4 million, and capacity days are 4.0 million.

1Net Per Diem = $1.0B ÷ 4.4M = about $227
2Net Yield     = $1.0B ÷ 4.0M = $250

The difference reflects occupancy above the lower-berth capacity basis.

That makes net per diem useful when an investor wants to focus on economics per consumed passenger day rather than economics per unit of available supply.

Net per diem is not average ticket price

Adjusted gross margin can reflect both ticket and onboard economics after specified direct variable costs.

Net per diem therefore should not be read as:

• average cruise fare;
• average daily ticket price;
• onboard spend per passenger;
• revenue per passenger day; or
• profit per passenger day.

It is a non-GAAP adjusted-margin measure with an issuer-defined numerator.

A change in net per diem can reflect cruise pricing, onboard spend, commissions, transportation costs, onboard expenses, itinerary mix, foreign exchange, and other factors.

Occupancy can move net yield without moving net per diem the same way

Consider a cruise operator that holds passenger-level economics constant while increasing third- and fourth-berth occupancy.

Passenger cruise days rise relative to capacity days.

If adjusted gross margin scales with those additional passenger days, net yield can improve because more economics are generated per available capacity day. Net per diem may remain comparatively stable because its denominator grows with the passengers.

This is why the pair is analytically useful:

1Net Per Diem → monetization per consumed passenger day
2Net Yield     → monetization per available capacity day
3Occupancy     → utilization bridge between them

The metric is especially sensitive to brand and itinerary mix

A luxury cruise brand can have high per-passenger economics at relatively modest occupancy. A family-oriented mass-market brand can carry more third and fourth guests with different ticket and onboard spending patterns.

Net per diem can also vary with:

• cruise length;
• destination mix;
• cabin mix;
• onboard package penetration;
• casino activity;
• beverage and dining mix;
• shore excursions;
• loyalty programs; and
• currency.

A higher level is therefore not automatically evidence of superior profitability.

Use the exact reconciliation

Because net per diem depends on Adjusted Gross Margin, analysts should inspect the issuer's reconciliation before comparing periods or companies.

The denominator is also important. Passenger cruise days weight passengers by trip duration, so changing itinerary length can affect the metric even when passenger count is stable.

Current filing evidence

Norwegian reports Net Per Diem alongside Net Yield in its 2026 disclosures and defines the former using Passenger Cruise Days rather than Capacity Days. Royal Caribbean provides a related passenger-day view through Adjusted Gross Margin per Passenger Cruise Day, even though its headline operating emphasis is generally Net Yields per APCD.

Sources:

• Norwegian Cruise Line Holdings Q2 2026 Form 10-Q
• Norwegian Cruise Line Holdings Q2 2026 earnings release
• Royal Caribbean Q2 2026 earnings release

Cruise net per diem is a passenger-day monetization metric. It should be kept distinct from net yield, occupancy, average ticket price, and company-level profit margin.

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