There is a refundable choice (more expensive), but you have to go through the booking page, filling out traveler info, and the last page will offer things like prepaid gratuities, dining, refundable fare, etc. Suites are non refundable.
If you cancel on an NR fare, you lose $100pp, and the rest will be held for another booking. If you choose not to rebook another cruise, you lose full deposit.