How to Get a Free Cabin Upgrade on a Carnival CruiseIn Feburary 2016 14,

In Feburary 2016 14,
Become a VIFP member. Accumulate one point for every day you cruise.
Earn Diamond status within the VIFP program. This requires 200 points or more.
Ask for your one-time free cabin upgrade as a Diamond VIFP member when you book your cruise.
Special Offers
Establish yourself as a past Carnival cruiser. If you have taken a cruise with Carnival before, you will have a VIFP membership and a past guest number, which makes you eligible for special offers while accumulating loyalty points.
Choose the Past Guest Offer with two-category upgrade. Book your cruise with a cheaper cabin then you will not have to pay any change fees when you upgrade to your preferred cabin via this program.
Choose the Past Guest Offer with Choice of Stateroom. Upgrade via this program means your choice of any stateroom at no extra charge.
Cruise Off-Season
Book your cruise with Carnival during the off-season.
Watch the fares for your cruise as you get closer to departure. If they start to drop, it's likely the cruise is not sold out, which means better cabins might be available.
Ask about an upgrade after you make your final payment. Carnival might be willing to upgrade you, especially if you're a returning passenger.
In Feburary 2016 14,