Changes I would make are: 1. Service in buffet would be cafeteria style where you hold your plate and staff serves the food. After close to 70 cruises, I have regularly witnessed the unhygienic habits of a significant number of my fellow passengers and I would think that given recent events, it is time.
2. Teach the staff to read their audience. A while back, probably pre-covid, we were on a ship and went to Skywalkers after dinner for libation and dance. A look at the crowd would have revealed that 80% or more were Medicare eligible. Noone was on the dance floor. The DJ was playing loud electronic tunes. I asked if he had any Motown, Stones or Doobie Bros. He played "I Heard it through the Grapevine" and "Mustang Sally". The dance floor quickly filled up. He was unable to detect the reason and went back to evangelizing his electronic sounds. The dance floor emptied and many left.