I was on the 10/22 Adventure sailing. The show was NOT canceled due to mechanical issues. Both the lighting tech for the show and bartender in the casino confirmed it was for health reasons (Covid ????). If you recall , from about 8:00 Tuesday night til the end of the cruise, all staff were wearing KN95 masks. My casino bartender told me the following day that all staff received an email telling them it was mandatory to wear them. Before then it was hit or miss if the staff was wearing a mask.