Ruby's night entertainment was amazing thanks to Gravity band and everyone from ship's entertainment leadership!!! Gravity has tried and satisfied variety of music choices and tastes. Some people like disco, some like line dancing or slow. So different from our experience on Royal Princess, where only "line dancing" music was offered and favored by a small group of people. Piano, violines, steel pan, acoustic guitar...very, very good. But, honestly, not a fan of production shows. Have seen it on Royal, and, nope...not for us.