How To Actually Cruise With Swim Diapers

If you are planning a family cruise with a toddler who is not fully potty-trained, you are probably worried about your swimming options. And if you aren’t, you should probably keep reading anyway. All major cruise ships offer an array of water activities that appeal to kids. But most of them will not allow babies or toddlers in swim diapers to participate.

One key challenge in finding the best cruises for toddlers is figuring out which restrictions will apply to your child if he or she is still in diapers. After all, you don’t want to show up and find your family banned from the pool. But information available online can be ambiguous, hard to find, and out of date. This guide cuts through the confusion so you know exactly where you stand before you book. 

Why Are Swim Diapers An Issue?

If you are new to cruising and trying to figure out the best cruises for toddlers, it may not be obvious that swim diapers could be a problem. You probably have no issue playing in your local pool with kids in swim diapers. So why should a cruise ship be any different?

Cruise lines are particularly focused on controlling the spread of germs that cause gastrointestinal illnesses. A chief source of that risk is pool contamination. Non-potty-trained kids can introduce bacteria into pool water that can make other passengers sick. And even a swim diaper does not fully prevent that.

The Centers for Disease Control (CDC) has long warned that swim diapers can give parents a false sense of security regarding fecal contamination. While they may hold in the actual stool, they do not prevent infection-causing germs from leaking into the water. At best, swim diapers delay diarrhea-causing germs from entering the water for a few minutes. They do not stop those germs from ultimately contaminating it.

That’s why cruise lines treat the use of swim diapers as a pool rule issue, not a parenting preference.

No Swim Diapers Allowed in Main Pools and Whirlpools.

Because of these health concerns, swim diapers are banned in traditional cruise ship pools and whirlpools. Virtually every cruise line that addresses the topic says the same thing: U.S. Public Health policy prohibits persons who are not toilet-trained, or who use diapers, pull-ups, or swim diapers, from using pools or whirlpools.

The CDC operates a Vessel Sanitation Program (VSP) to help the cruise line industry control the spread of gastrointestinal illness. The VSP operates under the authority of the U.S. Public Health Service Act and publishes detailed public health standards for ships calling on U.S. ports (updated June 2025). The VSP also conducts periodic inspections to verify compliance.

Under the relevant VSP regulations, children who are not potty-trained must be prohibited from using any recreational water facility not specifically designed and approved for use by children in diapers. So, on every ship that visits a U.S. port, the main pools and hot tubs are off limits.

But What About The Splash Zone? 

When you are researching cruise ships, you will come across many that advertise splash zones or spray parks. Some parents assume that if a ship has a lido deck with a splash area, it must be accessible to all toddlers, including those in diapers. That is not necessarily the case, and it is one of the most common misunderstandings in this area.

Here is what the CDC says about splash parks: water play areas (also called interactive fountains, wet decks, splash pads, or spray parks) recycle water through the system. Even though there is no standing water, spray water rinses any contaminants down into the holding area and is sprayed again. As a result, the water can become contaminated, making people sick.

Many cruise ships have splash zones in their water parks, but the presence of a splash area does not mean swim diapers are permitted. On some ships, the splash area shares a filtration system with the rest of the water park. So the swim diaper ban in the main pool applies to the splash zone as well.

Carnival, for example, states that no swim diapers are permitted in any of its water facilities, including spray parks.

The VSP recognizes that many families cruise with children who are not toilet-trained, and that those families still want water play options. So the VSP has created a set of requirements that permit cruise ships to build separate water-play areas with their own filtration systems that can be used by kids in diapers. Cruise lines must seek and receive VSP approval for each ship that will have such an area.

So What Are The Best Cruises For Toddlers in Swim Diapers?

Cruise Lines Without Designated Areas For Swim Diapers

The following cruise lines do not permit swim diapers in any of their primary recreational water areas:

Princess – “Because of U.S. public health restrictions, children in diapers, even swim diapers, may not use the pools.”

Carnival – “Children who are not toilet trained (and those in diapers or swim diapers) are not allowed in any of the water facilities on board, as per United States Public Health Services.”

Celebrity – “Due to public health regulations, children in diapers, swim diapers, pull-ups, or who are not completely toilet trained are not allowed in the pools or whirlpools.”

Holland America – “Children wearing any type of diaper, including swimming diapers, or who are not toilet trained, are not allowed into the swimming pool and whirlpool areas.”

Norwegian Cruise Line – “According to United States Public Health (U.S.P.H.) regulations, no diapers of any kind (child or adult) are permitted in the swimming pools, whirlpools or jacuzzis, including those marketed as ‘swimmers’.”

MSC Cruise Line

MSC remains the hardest line to get a clear answer from. As it relates specifically to swimming pools, this is the policy on its public website: “For hygenie reasons, babies in nappies are not allowed in the water.”

In years past, it was reported that some MSC ships allowed kids in swim diapers in splash areas adjacent to the swimming pools (e.g., MSC Seaside), but that information was only available via phone with agents. If MSC is on your radar, call them and ask specifically about the ship you are considering before putting any money down.

Worth keeping in mind: MSC introduced a significant new policy in May 2025 affecting the youngest cruisers. Children under 2 years old are no longer permitted on sailings of 11 or more nights. 

Two Clear Winners: Disney and Royal Caribbean

Both Disney Cruise Line and Royal Caribbean have publicly stated policies and VSP-approved water facilities for children in diapers. Those 2 lines remain your best options, by a wide margin.

Disney Cruise Line

Disney continues to be the gold standard for families cruising with children in swim diapers. Disney’s own guidance confirms that even if your child is not toilet-trained, he or she can enjoy the water play areas on board while wearing a swim diaper. Each ship has a dedicated, VSP-approved water play area designed for this purpose.

Disney’s fleet has grown since this article was first written. The Disney Treasure launched in December 2024, and the Disney Destiny is on the horizon. Each ship in the Disney fleet has a designated wet play area with its own filtration system. The specific names vary by ship: Nemo’s Reef, Dory’s Reef, and Nephew’s Splash Zone are among the options you will encounter, depending on which ship you sail.

Royal Caribbean

Royal Caribbean’s policy is clear: kids in diapers can only use Baby Splash facilities—and those facilities are available only on certain ships. Royal’s current FAQ includes the following ships: Adventure, Allure, Anthem, Freedom, Harmony, Independence, Liberty, Oasis, Ovation, Odyssey, Quantum, Spectrum, Symphony, Utopia, Wonder, Icon, Star, and Legend. Because this list can change, verify your ship on Royal’s FAQ close to booking and again before you sail.

The CDC VSP maintains a publicly searchable database of approved variances. You can use that tool to confirm which ships currently hold approvals for baby-only water facilities.

Other Options When Swim Diapers Are Not Allowed

If you have already booked a cruise that bans swim diapers, or if you simply love a ship that doesn’t have a designated diaper zone, you still have practical options.

1. PLAN YOUR WATER TIME ASHORE

Every major cruise itinerary includes port days with beach access. Sand and ocean are always swim-diaper-friendly. If your ship’s pool is off limits, build your trip around making the most of those port days.

2. RESEARCH SHORE EXCURSION POOLS IN ADVANCE

Some resort-style destinations accessible on shore excursions allow swim diapers in their pools. If you are planning to visit a resort as part of a shore excursion, confirm in advance whether it permits swim diapers before you commit to the excursion cost.

Closing Thoughts 

So, what’s the bottom line? If you are still in the planning stage and your child is in diapers, focus your search on Disney Cruise Line or Royal Caribbean. Thos the two cruise lines have the clearest, easiest-to-verify published policies for diaper-friendly onboard wet play areas, and that removes a lot of uncertainty before you travel.

If you are considering other cruise lines, plan your water fun around port days.  Your toddler will still have a great time. The pool just won’t be part of the picture.

For more information about cruising with a baby or toddler, visit our Resource Page.

 

Sharing is caring!