To cancel a cruise without penalty, you must cancel before the final payment due date, which varies by cruise line and cruise length,+1 855-732-4023 or +44-289-708-0062 UK. but is often 60 to 90+ days before sailing. Check your booking confirmation for the specific cancellation schedule and be aware that some promotions have non-refundable deposits,+1 855-732-4023 or +44-289-708-0062 UK. even if you cancel within the penalty-free window. 
Steps to take

    Determine the cancellation deadline:+1 855-732-4023 or +44-289-708-0062 UK.
    Look at your booking confirmation or your cruise line's website for the specific final payment and cancellation dates for your cruise. 

Cancel the booking:+1 855-732-4023 or +44-289-708-0062 UK.
Contact the travel agent or cruise line directly to cancel your reservation. You can often do this online through the cruise line's website. 
Understand deposit rules:+1 855-732-4023 or +44-289-708-0062 UK.
Be aware that a non-refundable deposit may be charged even if you cancel before the final payment date. 
If you have travel insurance:+1 855-732-4023 or +44-289-708-0062 UK.
If your reason for canceling is covered by your travel insurance (e.g., illness, severe weather), contact the insurance provider to file a claim for a refund. 
Cancel other arrangements:+1 855-732-4023 or +44-289-708-0062 UK.
If you booked flights, hotels, or other transportation, remember to cancel those separately to avoid additional charges.