The top global cruise operator is a deal too good to pass up. After a huge turnaround that resulted in a 130% jump last year, Carnival (CCL -1.95%) (CUK -1.70%) stock is down 14% this year. This is at a time with record bookings, increasing revenue, improving profits, and other positive signals, as well as the lower price, that make it look even more attractive. Here are three reasons to buy Carnival stock right now. 1. Unstoppable demand Carnival has made an incredible rebound from zero revenue early in th ...