Sixthman, owned by NCL, runs the themed cruises on the Pearl. I've done over a dozen of their charters and they have a great product: shows run on time with good sound and visuals. On the cruises I've done they cover the main pool so that people can stand in front of the main stage but on the Broadway site I saw a picture showing main pool is uncovered. Spa runs as usual. Latitude perks are mostly in effect although a few are not. Food is same but often close Le Bistro and the smaller main dining room for use by artists and crew.
https://www.sixthman.net/latitudes