Better Comps/Offers when both stateroom guests play?

Do any cruise lines provide better/combined comps when both cabin guests gamble?

For example, if I call NCL Casinos At Sea and tell them that two players, who both have established history, will be sailing together - would they combine the players theoretical losses to offer a better comp'd cabin, or onboard credit / free-play package?

Trying to figure out of it is better to combine our play on one single card.

I can only speak about CAS with NCL. It can get you a better cabin, but it depends on the sailing and the cost of the cabins.

My husband usually qualifies on his own for an ocean view cabin, and I usually qualify for a mini suite, for a non popular sailing we have been able to get a haven comp'd. But for popular sailings no such luck!

Absolutely phone CAS and see what they can do.

We don't play on "one card" but I think our cards are linked.