Smirnoff Ice is a malt beverage. Since it doesn't contain hard liquor, you may be able to bring it on. It will depend on the person screening the beverages. If you encounter someone who is picky, they would be following policy to not allow it since it isn't labelled as a "beer". But if you encounter someone more lenient, they might recognize it isn't hard liquor and is similar to beer as a malt beverage and therefore let it pass. It's your call whether you want to try it or not as long as you understand it may be taken and held for you until the end of the cruise.
ETA: Just wanted to add that my experience has been the screeners have not opened my bags to inspect the bottles. I bring one or two bottles of wine on at embarkation and they've never batted an eye. Only once did a screener ask me "is that a bottle of wine in your bag?" I said yes, and they waved me by. One cruise I brought one bottle of wine for myself and a 6 pack of beer for my dad. We were going through security together and the wine and beer were in the same roller bag. They didn't open the bag to check the beer bottles. That's not say they never open bags to check the beverage labels, but there's a chance they will see 6 bottles and assume it's beer.