If you intend to do kayaking, plan to have a change of clothes as you will easily get wet.
As for shoes, choose what is appropriate according to the temperatures and bring along trainers/walking shoes for the excursions (visiting caves, hiking, cycling, etc.).
Don’t forget your bathing suit!
If you are cruising for 3 days / 2 nights, you will be transferred on the second day, from about 8.30 AM to 4.30 PM on our day boat. You can plan to have a small backpack to take to the day boat as you will be able to leave the rest of your baggage in your cabin.