I’m like you.
I’m told it’s very dependant on what cruise you pick.
Personally, I despise/hate the Las Vegas scene, more of an outdoors type guy. I’m thinking most cruises are like Vegas and crappy buffet food.
That said, I’d really like to try at least once.
Try one of the Delta steamboats on the Mississippi.
I got six trips across and back, Seattle-Yokohama in the 1950s-1961.
Two weeks at sea was enough for me...