Groupon Miami is advertising a 4 night all-inclusive Carnival cruise package.

I've never been on a cruise, does this sound like a good deal?

http://www.groupon.com/deals/travel-...iami?c=dnb&p=6

I went on the Carnival website and looked at booking the exact trip within the timeframe provided by Groupon, and the Carnival cruise prices were barely more than this Groupon.

I can't see how this could be worth $2000ish, what am I missing?

Thanks