Cruise Line Loyalty: Pros and Cons Of Being Loyal To A Cruise Line?

What are the pros and cons of staying loyal to a cruise line? I explore the best and worst things to being cruise line loyal. Most cruise lines have a cruise loyalty program where you can build up tours and benefits based on the number of nights you cruise with them. But, is it really worth building up status on a cruise line, or are the perks and loyalty benefits not worth it? I explore the 2 worst things and the 6 best things, where the downsides could out-weight the upsides.