Weather shocking so all port of call activities were cancelled. Unfortunately onboard entertainment was almost nil making the cancelled port of call day even less bearable. This was an inaugural rock cruise and, apart from performances being cancelled or moved to another venue without notification or staff being able to advise on changes, why music other than rock was performed is beyond comprehension. Performances were repetitive and several were weak or downright poor. Scheduling was bad with several performers playing at the same time with huge gaps of no entertainment, or days of very little entertainment making for very boring periods. Ship's band really poor and sad that many events involved DJ music rather than live entertainment. Second time on this cruise ship and previous comedy one in 2013 much better. Food venues changed but unfortunately food not much improved and frequently kitchens ran out of food and long waits experienced.Bar staff need to learn proper ways to make cocktails and should be consistent across entire ship.