Welcome to cruise-chat.
Nice prize! You'll enjoy the Freedom. Please use an agent who specializes in cruises. Don't try to coordinate this on your own. An agent doesn't cost you anything. The on-line price is going to be at least the same as an agent can get you, and the agent may have some cheaper space available. More importantly, this could be a complicated booking and you need a professional cruise specialist handling it.
Do you have a cabin already assigned to you for the prize?