Visit Similan Islands

Terms and conditions

These terms explain how bookings, payments and trip changes work when you arrange a snorkelling or scuba diving trip. We have kept them as clear and practical as possible.

Last updated: 5 October 2026

1. Making a booking

Sending an enquiry or booking request does not confirm a reservation straight away. We will check availability and your booking is confirmed when we send you written confirmation and any required payment has been received. The person making the booking must be at least 18 years old and is responsible for the booking on behalf of everyone included in it. If you provide another traveller’s details, please make sure they are happy for you to do so and that they understand these terms.

2. Prices and payments

The amount and currency shown in your written confirmation or invoice are the amount due. Any deposit, balance amount and payment deadline will be explained before you pay. Please pay by the stated deadline so we can keep the reservation secured. If payment is late, the requested places may be released. Card payments are handled through a secure hosted payment provider, and your bank or card provider may apply its own exchange rate or charge.

2A. Scuba day-trip and liveaboard bookings, payments and cancellations

This section applies to our scuba day trips to Similan Islands, Surin Islands, Richelieu Rock and our 2-day/1-night, 3-day/2-night, 4-day/3-night scuba liveaboards. For these trips, it takes precedence over any conflicting general payment, cancellation or refund wording on this website.

How do I check availability?

Message us on WhatsApp or use our Contact us page. Tell us your preferred departure date, number of guests, and each diver’s certification and recent diving experience.

We’ll let you know if there’s space on your preferred departure date.

How do I book and pay?

Once we confirm availability, we will send you a secure payment request.

More than 30 days before departure: pay a 50% deposit to secure your booking. The remaining 50% is due 30 days before departure. You are welcome to pay in full earlier.
30 days or fewer before departure: full payment is required when booking.

We will send your written booking confirmation once your place has been secured and the required payment has been received.

Please pay your balance by the deadline shown on your invoice. If it is not paid on time, your reservation may be cancelled and the cancellation policy below will apply.

What happens if I cancel?

Please contact us as soon as your plans change. We will try to move your trip to another available date. Date changes depend on availability and do not restart the original cancellation period.

Send your cancellation by WhatsApp or through our Booking Support form. The date we receive your message determines which cancellation period applies.

More than 20 days before departure: you receive a refund of what you have paid, minus one ฿2,500 fee per reservation. This fee covers booking administration, cancellation handling and payment charges. It applies once to the whole reservation, regardless of how many people are booked.
20–11 days before departure: you receive a 60% refund of the total booking.
10–8 days before departure: you receive a 40% refund of the total booking.
Seven days or fewer before departure, or no-show: no refund is due.

The 60% and 40% refunds apply to bookings paid in full. Any unpaid balance will be deducted from the refund.

These periods are measured before your scheduled departure date. Refunds cannot exceed the amount you have paid. Your legal rights are not affected.

What if Visit Similan Islands cancels my trip?

If we have to cancel your trip, we will offer another available date where possible. If that does not work for you, we will refund everything you have paid to Visit Similan Islands for this booking, including your deposit. No cancellation or administration fee will be deducted.

3. Availability and trip details

Trips are subject to availability, weather, sea conditions, national-park decisions and safe operation. Pickup times, boats, dive or snorkelling sites, routes and schedules may change when reasonably necessary. We will provide the latest confirmed information available to us and let you know about a significant change as soon as reasonably possible. Please avoid making tightly timed onward travel arrangements around an estimated return time.

4. Traveller information

Please provide complete and accurate names, contact details, dates, hotel or pickup information and any other details requested for the trip. Scuba bookings may also require certification, recent-dive experience, equipment and insurance information. Tell us promptly if anything changes. Incorrect or late information can delay confirmation, affect pickup or prevent a traveller from being accepted on the trip.

5. Scuba diving, suitability and safety

All scuba diving trips in the National Marine Parks require Advanced Open Water certification or higher. You must also have been diving within the 18 months before departure. All guests must follow reasonable safety instructions from the captain, crew, guide or dive professional. Scuba diving insurance is required for all scuba diving trips in the national marine park. Please check your holiday insurance, as not all insurance policies cover scuba diving. If you need short-term holiday scuba insurance, read the diving insurance guide.

6. Changing or cancelling your booking

If your plans change, use our Booking Support form as soon as you can and include your booking reference and travel date. We will always try to move your booking to another available date. Date changes are subject to availability and do not restart the original cancellation period. Refunds and cancellation charges are explained in the Refund and Cancellation Policy and in any trip-specific terms provided before payment. The terms accepted for your confirmed booking continue to apply.

7. Changes or cancellations by us

A trip may occasionally need to be changed, postponed or cancelled because of weather, sea conditions, safety, or a National Park or local authority decision. If this happens, we will contact you as soon as reasonably possible and explain the options. If we cancel your trip, you can move to a suitable alternative date or receive a full refund. No cancellation, administration or bank charge will be deducted from that refund.

8. Pickup and departure

Please provide accurate hotel details, check the pickup time and location shown in your booking confirmation, and be ready at least 10 minutes early. This helps the transport team keep every collection running on time. If you need help with your pickup, message Visit Similan Islands on WhatsApp. Please also follow the travel-day pickup instructions in your booking confirmation.

9. Website information

We work to keep trip descriptions, inclusions, prices and schedules accurate. Travel information can change, so your latest written booking confirmation takes priority where it differs from general website information. Website text, photographs, branding and original material may not be copied or used commercially without permission.

10. Privacy and cookies

Our Privacy Policy explains how booking and traveller information is used and retained. Our Cookie Policy explains the website technologies we use and the choices available to you.

11. Changes to these terms

We may update these terms when our booking process, trips or applicable requirements change. The version provided or linked when your booking is confirmed will apply to that booking unless a later change is agreed with you or is required by law.

12. Contact us

For questions about a booking or these terms, use our Booking Support form.