Mostly Broadway I would say. They will have 2 or 3 production shows on a 7 day cruise, one comedian, maybe a magician and a couple of other shows,plus maybe second City, depending on the ship, but not really Las Vegas style..
On the Dawn a year ago, we were totally blown away by the production shows. In addition to the usual cast, they had a Russian ballet duo, a Latin dancer duo, and some circque de Soleil style acrobats all merged into the basic Broadway style review. Great fun, in my book.