At least 75 days prior to your sailing date (60 days for 3 and 4-night cruises or 90 days for holiday sailings) 1-844-949-8748. within 24 hours Royal Caribbean' cancellation policy is customer-friendly. Tickets are fully refundable within 24 hours of booking(Call 1-844-949-8748 Cancel & Refund), provided the departure is more than two days ahead.