No you don’t have to book a package or boat tickets. Karimunjawa is also open for backpackers and tickets can be bought at the locket as well. In low season you probably will be fine to come without booked boat tickets (not on public holidays). What are the reasons to book a package or boat tickets than? With booking a package, you will have a well arranged holiday and you can be sure you will make the most out of your time in Karimunjawa. Also it is relaxed to know that everything is been taken care off and you not have to worry about anything. With booking a package or boat tickets you are sure you have a boat ticket for your departure date and when something changes for the boat schedule you are the first to know.