Yes, most hotel reservations are fully refundable provided that you cancel prior to the accommodation's cancellation deadline, which is often 24 or 48 hours before your check-in date. If you have a reservation that's non-refundable, you might be able to still cancel and be given a refund within 24 hours of booking. Plug in your dates, click on "Search", then use the filter option "fully refundable" to get the best deals available near Pulau Tiga Park.