Carnival (CCL 4.17%) (CUK 4.03%) continues to deliver impressive results, but its stock is still 64% off its all-time high. There's good reason for that; it has a huge debt that makes it risky.But that isn't likely to stick around forever. If you have some appetite for risk, now's the time to buy before it pays off the debt and soars. Here are three reasons why Carnival stock looks ripe for buying today.1. It's experiencing record demandCarnival is the largest cruise operator in the world, and it's dealing ...