The most important thing to understand about Explora Journeys' OT1, OT2, OT3 and OT4 categories is that the number is not a simple measure of a better room. Explora describes Ocean Terrace Suites as one accommodation type, while the official deck plan divides that inventory into four color-coded categories. The real decision is the exact location you are buying—and whether Ocean Grand Terrace's larger outdoor area is worth the difference.
The official EXPLORA III Ocean Terrace page gives one shared feature list for the suite family. The EXPLORA III deck plan separately identifies OT1, OT2, OT3 and OT4 in its legend. That is why a cabin-number review is more useful than assuming the highest OT number is automatically best.
Quick answer Begin with the least expensive Ocean Terrace location you would be happy to occupy. Move up among OT1–OT4 only when the actual deck or ship position improves the experience for you. Choose Ocean Grand Terrace when its approximately 118-square-foot terrace (11 square metres) and available deck 6 or 7 location justify the premium over the standard terrace of approximately 75 square feet (7 square metres).
Explora Ocean Suites comparison at a glance
| Category | Published accommodation | Private terrace | What should decide it? |
|---|---|---|---|
| OT1 | Ocean Terrace Suite | About 75 sq ft / 7 sq m | Exact location and fare |
| OT2 | Ocean Terrace Suite | About 75 sq ft / 7 sq m | Exact location and fare |
| OT3 | Ocean Terrace Suite | About 75 sq ft / 7 sq m | Exact location and fare |
| OT4 | Ocean Terrace Suite | About 75 sq ft / 7 sq m | Exact location and fare |
| GT | Ocean Grand Terrace Suite | About 118 sq ft / 11 sq m | Larger terrace and deck 6 or 7 location |
Explora publishes the terrace measurements as 7 square metres for Ocean Terrace and 11 square metres for Ocean Grand Terrace—approximately 75 and 118 square feet, respectively—on the official Ocean Terrace and Ocean Grand Terrace pages. Square-foot equivalents are rounded conversions. Explora's deck plan is the source for the OT1–OT4 and GT category codes.
What every Ocean Terrace Suite includes
Explora lists the same core features for the Ocean Terrace family: oversized floor-to-ceiling windows, a lounge area, a private oceanfront terrace with a dining table and daybed, a replenished refrigerated minibar, espresso machine, coffee and tea, binoculars, walk-in wardrobe, king-size bed setup and a bathroom with walk-in shower and heated floors. Some suites have twin-bed, sofa-bed or bathtub configurations, so those details require a suite-specific check. See Explora's complete Ocean Terrace feature list.
The standard Journey package also includes nine culinary experiences including in-suite dining, unlimited beverages, high-speed Wi-Fi, onboard gratuities, thermal-area access and group wellness activities. Guests in Ocean Suites may make early dining reservations 75 days before departure under the current published policy. Check the current Journey inclusions and reservation windows.
In other words, paying more for OT4 instead of OT1 does not come with a separately published list of onboard service benefits. The reason to move up is normally the specific location available within the higher category, not a different beverage package or dining entitlement. This conclusion is based on Explora's shared Ocean Terrace feature page and its category-based deck plan.
OT1 vs OT2 vs OT3 vs OT4: how should you choose?
Explora's deck plan uses color to show which suite numbers belong to each OT band. Because available inventory changes with every sailing, a static list of “best” suite numbers would be misleading. Open the live quote beside the current EXPLORA III deck plan and assess these five factors:
1. Sensitivity to motion
A lower, more central position is usually the conservative choice for a traveler who is sensitive to motion. If that matters more than deck height, an OT category offering a central location may be more valuable than a numerically higher category farther forward or aft.
2. What is above and below
Look at the deck on both sides of the suite. Pools, restaurants, service areas and public circulation can matter more than one deck of height. The official EXPLORA III plan shows accommodation decks 6 through 10 and labels the public venues above and below them. Review both deck-plan pages.
3. Walking distance
A suite near the elevators can be convenient; one farther along the corridor may feel more secluded. Decide which is more important before treating proximity as either a benefit or a drawback.
4. Bed, sofa and connecting configuration
Explora notes that only some Ocean Terrace Suites have twin beds, sofa beds or bathtubs, and the deck-plan legend identifies accessible and connecting suites. Confirm any must-have configuration in writing. See the accommodation caveats and deck-plan legend.
5. The actual price gap
Do not compare OT1 and OT4 in the abstract. Compare the specific available suites on your sailing. A small premium may be reasonable for a location you strongly prefer; a large premium can often be used more effectively for private touring, hotels or a longer journey.
What changes with Ocean Grand Terrace?
Ocean Grand Terrace is the first comparison that produces a clearly published physical difference: the terrace grows from approximately 75 to 118 square feet (7 to 11 square metres). Explora also places these suites on decks 6 and 7. The terrace retains a dining area and daybed, while the interior feature list remains broadly similar to Ocean Terrace. See Explora's Ocean Grand Terrace description.
That is roughly 57 percent more terrace area. The upgrade is most persuasive when you expect to use the daybed and outdoor dining area frequently, are traveling on a scenic itinerary such as Alaska, or simply dislike a tighter balcony. It is less persuasive when weather or schedule will keep you indoors, or when the available GT location is not your preferred position.
When should you upgrade beyond Ocean Suites?
Explora separates its accommodations into Ocean Suites, Ocean Penthouses and Ocean Residences, with additional benefits for the higher tiers. The current inclusion schedule opens dining reservations 75 days before departure for Ocean Suites, 90 days for Ocean Penthouses, 120 days for Ocean Residences and 180 days for the Owner's Residence. Compare Explora's category benefits and timing.
Move beyond Ocean Suites when you value the extra living space, layout and published category benefits enough to justify them—not merely because the word “Residence” sounds more luxurious. For many couples, a well-located Ocean Terrace or Ocean Grand Terrace will already provide the private outdoor space and core onboard inclusions they want.
Best Explora suite choice by traveler
| Your priority | Best starting point | Why |
|---|---|---|
| Lowest sensible fare | Least expensive acceptable OT category | You retain the shared Ocean Terrace features and private terrace |
| Motion sensitivity | Most central available Ocean Terrace location | Location matters more than the OT number alone |
| More outdoor room | Ocean Grand Terrace | The published terrace grows from about 75 to 118 sq ft (7 to 11 sq m) |
| Specific bed or bath need | Suite-number review | Twin beds, sofa beds and bathtubs are available only in some suites |
| More space and priority benefits | Compare a Penthouse or Residence | These are separate accommodation tiers with added benefits |
Five suite-booking mistakes to avoid
- Assuming OT4 has a different published interior or benefit package from OT1.
- Selecting by deck number without checking the ship position.
- Ignoring what is above, below or beside the suite.
- Expecting a bathtub, sofa bed, twin setup or connecting door without confirming the exact suite.
- Paying for Ocean Grand Terrace without deciding how much you will use the extra approximately 43 square feet (4 square metres) outside.
Why use a travel advisor to choose an Explora suite?
An online category list cannot tell you whether the remaining OT2 location is better for you than the available OT4, or whether a GT premium is worth paying on your itinerary. That requires comparing live inventory with the deck plan, your tolerance for motion and walking, your preferred view and the complete trip budget.
Send me the Explora journey you are considering and the details that matter to you. I can review currently available suite numbers, compare category and promotion terms, and explain the tradeoffs before the reservation is finalized. The goal is not automatically to move you into the most expensive category; it is to place you in the option that gives you the best fit for the money.
Help me choose an Explora suite →
Frequently asked questions
What is the difference between OT1, OT2, OT3 and OT4?
Explora's accommodation page describes Ocean Terrace Suites as one shared suite type, while its deck plan divides inventory into OT1 through OT4. Compare the exact deck and position attached to each available suite rather than expecting four different published room designs. See the Ocean Terrace description and official deck plan.
How large is an Explora Ocean Terrace balcony?
Explora lists the private terrace at approximately 75 square feet (7 square metres). Check the current specification.
What is an Ocean Grand Terrace Suite?
It is an Ocean Suite with an approximately 118-square-foot terrace (11 square metres). On EXPLORA III, Explora says Grand Terrace Suites are on decks 6 and 7. See the official description.
Is Ocean Grand Terrace worth it?
It can be when outdoor space is a priority and the live price gap is reasonable. If the available GT location is not ideal or you will rarely use the terrace, a standard Ocean Terrace may be the better value.
When can Ocean Suite guests reserve dining?
Explora's current published window is 75 days before departure for Ocean Suite guests. Verify the latest category benefits.
Sources and currency
Updated September 14, 2026. Primary sources: Explora Journeys' official Ocean Terrace Suites, Ocean Grand Terrace Suites, EXPLORA III deck plan and Journey inclusions. Suite availability, category locations, benefits, offers, prices and terms can change; the live inventory and written booking documents control.