Most ships have casinos. There are also numerous special events like the Captains Cocktail Party, Passenger Talent Night, The Masquerade Ball, and the Late Night Buffet. And the night never ends until you want it to - even until you can view your first sunrise at sea. On your cruise vacation, the entertainment is always on the house. No charge for admission.
Shows are live.
Movies are first-rate. And the variety is endless. It's your cruise, do what you want. You can do everything. You can lie back and do absolutely nothing.