I was recently on the Wish, and this really bugged me. I remember on the other ships (at least Fantasy and Dream, which were the ones I had been on most recently before the Wish), when you walked into Cabanas they had a cast member directing you to the sinks to wash your hands. Yes, you could still get around washing your hands, but it was kind of hard to do because of where the CM was standing.
On the Wish, they put these beautiful sinks in on one side of the hallway into Marceline Market. And while there sometimes was a CM there, I never heard any of them tell/remind/ask people to wash their hands before entering the buffet. No signage either asking/reminding people to do it. And in my observation, most people walked right past the sinks.
Especially after COVID, and with there being norovirus outbreaks on some ships, it was doubly disappointing to see 1)
DCL had apparently gone backwards in their 'request/enforcement' of handwashing before the buffet and 2)guests not taking a little individual responsibility for good hygiene before the buffet.