Carnival PLC (ADRs) forum
NCLH NCLH, 
CCL, CUK & Royal offer a great benefit if you own 100+ shares. You get up to $250 per cabin per cruise with no limitations of how many cruises you take. If you take 4 cruises per year, that adds up to be a great dividend... KINDA. You must prove stock ownership and must own shares within 3 months of set sail date. I personally have benefited.