Let's start with the thing most parents get wrong, because it changes the booking: children count toward the 13-guest limit. Every one of them, at every age. A newborn asleep in a carrier counts exactly the same as an adult.
So two families travelling together — four adults and nine kids — is a group of 13, not four. It is worth counting properly before you enquire, because it is the sort of thing that otherwise surfaces on the dock, and nobody wants that conversation on a birthday morning.
With that out of the way: a charter is one of the better things you can do in Miami with children, and here is what makes it work.
Why the Guest Count Includes Kids
The 13-guest cap comes from regulation, not from the size of the boat. It counts people aboard rather than fare-paying adults, so there is no exemption for infants or toddlers, and no minimum age that changes the maths. The captain and crew are separate and do not count toward it.
If you are curious about where the number comes from, our explainer on bareboat charters in Miami covers the structure behind it. The practical takeaway is simply to count every head.
Is the Water Calm Enough?
This is the question parents actually worry about, and Biscayne Bay is a good answer to it. The bay sits behind Miami Beach and the barrier islands, which shelter it from open-ocean swell. The National Weather Service issues a separate marine forecast for the bay, and the typical reading is smooth to light chop — not something most children would notice.
On a calm morning it can go close to mirror-flat. That is the real reason morning departures get recommended for nervous passengers, rather than just a scheduling preference.
What changes it is wind. Miami's sea breeze builds through the day, so afternoons are reliably breezier than mornings, and when the wind gets up even a sheltered bay turns choppy — shallow water builds short, steep chop quickly. Boat wake on busy weekends adds to it. In summer, the chance of an afternoon thunderstorm is the other good argument for a morning slot.
Heading out through the inlet into open water is a different ride entirely, so say up front if you would rather stay inside the bay.
If anyone in the family is prone to motion sickness, mornings are calmer, staying in the bay helps, and it is worth asking a pediatrician about remedies before the day rather than hoping.
How Long to Book
Shorter than you would book without kids. Three to four hours is usually right for a family with young children — long enough for a proper swim stop, short enough to land before anyone is overtired and sunburnt.
Morning departures work better than afternoon ones for the same reasons they work everywhere: cooler, calmer, and ahead of the nap that will otherwise happen on the ride home. Our guide to choosing a charter length goes through the trade-offs in more detail.
The Swim Stop
This is the part children remember, and where the destination genuinely matters.
The Nixon Sandbar is shallow enough at the right tide that kids can stand and wade rather than swim, which is a completely different experience from jumping into deep water. Depth and access there depend on tide and conditions on the day, so guests should always consult the captain before planning around it. The captain will determine whether anchoring or going ashore is appropriate based on water depth, tide, the yacht's draft, boat traffic, weather, and any local restrictions in effect. Weekday mornings are also far quieter, which suits families better than the weekend crowd.
Monument Island is the other option worth asking about — a city park with a shallow shoreline, somewhere to go ashore, sunrise-to-sunset hours and no facilities of any kind. The water around parts of the island can be shallow, so guests should always consult the captain before planning to anchor nearby or go ashore. The captain will determine whether access is appropriate based on water depth, tide, the yacht's draft, boat traffic, weather, and any local restrictions in effect.
Life vests are provided in children's sizes. Ask for them at the dock rather than at the swim stop, so nobody is sizing a vest while everyone else is already in the water.
What to Pack Beyond the Usual
Everything in our standard packing list applies. For children, add:
- More sunscreen than you think, and reapply on a schedule rather than when someone looks pink. Reflection off the water roughly doubles the exposure.
- Rash guards or swim shirts. Easier than reapplying sunscreen to a moving child every forty minutes.
- Hats that fasten. Loose ones end up in the bay.
- A full change of clothes each, plus a spare towel. Wet children get cold on the ride back even in August.
- Water shoes, if you are wading onto a sandbar or island.
- Snacks they already like. A boat is not the place to introduce new food.
- Something for the transit. The cruise out is exciting for about fifteen minutes.
- Nappies, wipes and a changing plan if you have babies aboard — the bathroom is compact.
Bring your own towels, plates and disposable utensils as usual; those are not provided. Coolers and ice are.
Who Is Responsible for the Children
Worth stating plainly, because it follows from how private charters are structured. The primary customer — the person who books the boat, called the charterer in the formal paperwork — is responsible for their guests. Children are guests like any other, so they sit under exactly the same responsibility as the adults.
The crew's job is running the vessel safely: navigation, anchoring, reading conditions and watching traffic. That is where their attention needs to be. They are not lifeguards or childminders, and this matters most at the swim stop and around the swim platform.
One consequence worth thinking through if two families are sharing a boat: the responsibility rests with the primary customer, and it covers every guest aboard — not only their own children. It is worth a conversation before the day rather than an assumption during it.
The arrangement most families land on: designate one adult who is not swimming and not drinking at any given moment, and rotate. It sounds formal and takes about ten seconds to organise.
Tell Us in Advance
When you book, say how many children are coming and roughly what ages. It lets the crew have the right life vests ready, and it shapes the route — a family charter and a bachelorette charter are not the same day, and the captain plans accordingly.
It also helps with boat choice. Shade, an air-conditioned interior and a second bathroom matter more with children aboard than with a group of adults, and layouts vary. Our guide to picking the right size boat covers what changes, and the sales team can tell you what is available on your date.
FAQs
Do children count toward the 13-guest limit?
Yes. Every person aboard counts regardless of age, including infants. Only the captain and crew are additional.
Is there a minimum age for a yacht charter?
No. Children of any age are welcome aboard.
Are life vests available for children?
Yes, in children's sizes. Ask the crew at the dock so they are fitted before you reach the swim stop.
How long should a family charter be?
Three to four hours suits most families with young children — enough time for a real swim stop without the day running long.
Who is responsible for children on board?
The primary customer — the person who books the boat — is responsible for all their guests, children included. The crew operate the vessel and are not lifeguards or childminders.
Is Biscayne Bay rough?
Not usually. The bay is sheltered by Miami Beach and the barrier islands, so it avoids open-ocean swell, and forecasts typically read smooth to light chop. Wind is what changes it — Miami's sea breeze builds through the day, so mornings are calmer, and a strong breeze can make even a sheltered bay choppy.
Plan a Family Day on the Water
Tell us your group size — counting the children — your date, and the ages aboard, and we will put together a route that works for them. Browse the Miami fleet, or call or text us at (786) 575-5200.
