A full-boat phinisi charter looks like the simplest product in the Komodo market: one number, one boat, your group, done. In practice the headline price is only the opening move. The contract behind it has three moving parts that decide what you actually pay and what you actually get — how guests are counted, how the per-extra-guest fee stacks once you pass the base allowance, and how much of the route you can genuinely redraw inside a national park. We broker group charters out of Bali all season, and the disputes we get called into are almost never about the boat. They are about one of these three mechanics being assumed instead of read. So here is how each one actually works.
What “1–10 guests” really covers
Most Komodo private-charter rate cards are built the same way: a package price that covers a group of up to ten, then a fixed surcharge for every additional guest above that. The important word is guests. Crew never count against your allowance — a nine-cabin boat running twelve or more crew is normal, and the chef, guides and deckhands are the operator’s problem, not yours. Your own party, however, is counted strictly. On most contracts a child is a guest from age three; some operators publish this openly, others bury it, but “children aged 3 and above pay the full rate” is close to an industry default in this fleet, so a family group of six adults, four kids and two toddlers is usually billed as ten guests, not six. If you plan to bring a photographer, a nanny or a tour leader, ask in writing whether they are a guest or can be berthed as staff — the answer varies boat to boat and it moves the invoice by hundreds of dollars per night.
How the extra-guest fee stacks after ten
The surcharge mechanic is simple but people consistently model it wrong. The fee is per additional guest, per package — not per night — and on many boats it steps up with trip length. Take a group of fourteen on a boat whose four-day package covers ten guests with a USD 350 surcharge: you pay the base price plus four times 350, a flat USD 1,400 on top, whether those four extras are adults in their own cabins or children sharing with parents. Three things follow from this. First, the per-head cost of a charter falls fast as you fill the boat: guest eleven onward is dramatically cheaper than guests one through ten, because they only carry the surcharge, not a share of the base. Second, the surcharge does not buy extra cabins — it buys the right to board. Cabin allocation is a separate conversation, and on a nine-cabin boat a party of sixteen means doubling up everywhere and possibly extra beds, which some operators price separately and some do not price at all until you ask. Third, every boat has a hard ceiling set by its licence and safety equipment, and no surcharge unlocks capacity beyond it. If the boat is certified for 21, guest 22 does not sail at any price.
A published rate card that shows the whole mechanic
Because most operators only quote by WhatsApp, it helps to study the few boats that publish the full table. The Elbark Komodo cruise is a clean worked example: a 37-metre, nine-cabin phinisi out of Labuan Bajo whose private buyouts run from USD 8,400 (the 2D1N package) to USD 15,400 for the six-day tier, each covering one to ten guests, with extras billed at USD 300 per person on the two shortest packages, USD 350 on 4D3N and USD 400 on the longest trips, up to the vessel’s 21-guest ceiling. Read that card the way a mechanic reads it: the step-up in the surcharge tells you longer trips carry more marginal cost per body, and the 8,400-to-15,400 spread tells you the second, third and fourth nights are much cheaper than the first — the delta from 2D1N to 3D2N is only USD 1,250. Group buyouts are contracted with Komodo Luxury, which says it accepts secure payments — from Visa and Mastercard to Wise, Airwallex and Stripe — for guests from 60+ countries; WhatsApp +62 811 3823 875 or sales@komodoluxury.com. The full package table, cabin list and terms sit on the operator’s booking page, and even if you end up on a different boat, it is worth reading as a template for what a complete quote should disclose.
Route customisation: what a buyout does and does not buy
The single biggest misconception in group charters is that buying the whole boat means owning the itinerary. Inside Komodo National Park it does not. The park operates on a permit system, ranger-escorted landings, and zoned anchorages, and your captain answers to those rules before he answers to you. What a private charter genuinely buys is sequencing freedom within the sanctioned map: you can front-load Padar for a sunrise trek, swap Komodo Island for Rinca for the dragons, linger at Manta Point instead of racing a shared-trip schedule, and bolt on secondary stops — Siaba, Rangko Cave, Seraya, Sabolo or Bidadari — that open-trip timetables skip. What it does not buy is anything outside the regulated envelope: closed zones stay closed, landing hours are fixed, and diving on boats built around snorkelling is an advance-request item that needs confirming before you sign, not on day two. Weather sits above all of it. Every serious contract carries a clause letting the captain reroute or cancel stops on sea state and field conditions, usually without refund, and it is not decorative — the published itineraries themselves carry a standing note that destinations may change with weather and field conditions. Treat the itinerary as a strong intention, not a guarantee, and brief your group accordingly — the charterers who have a bad time are the ones who promised their guests a fixed schedule the park never promised them.
Deposits, balances and the calendar
Group money mechanics are where organisers get burned, because you are collecting from ten people while the operator collects from one. The standard structure in this market: half the money up front to fix the date, the remainder due on the 30-day line, and that first half non-refundable from the moment it lands. Boats taking bookings a year out often run a gentler ladder — around 30% at booking, 20% more at the 120-day mark, the rest at 30 days — but the non-refundable character does not soften. Cancellation scales are frequently drafted in the operator’s favour and are not always internally consistent between the terms page and the FAQ, so pin the exact schedule in writing before you collect a single transfer from your group. Two protections worth building in: collect from your party before you pay each operator milestone, not after, so a dropout is their problem and not yours; and ask about name substitution — many contracts that refuse refunds will happily let a replacement guest take a cancelled seat, which for a group organiser is the escape hatch that matters most.
The line items that arrive after the quote
Finally, budget for what the package price deliberately excludes. Entrance and ranger fees for the national park are almost never in the charter price; the government sets them by regulation and revises them without notice, and are typically processed against your invoice separately — no honest operator promises a set figure months out. Alcohol is a standing exclusion, as are crew tips, travel insurance and flights. And if anyone in your group flies a drone, that is its own park permit, about USD 135 for every drone, every day, at current published estimates, and the request must go in roughly a week ahead of sailing — not something the captain can conjure at the anchorage. None of these items is large against a five-figure charter, but they land late in the process, and a group organiser who has already collected fixed shares from ten people has no room left to absorb them. Price the mechanics first, then the romance. The sunsets take care of themselves.