Well since the CDC is now letting the ships decide for themselves what's appropriate and most people weren't wearing masks when it was suggested, I suspect everything will change back to what it was before Covid began. i.e.- open self service buffet, no mask in show lounge, filled elevators, no masks required when exiting the ship, etc.
I can't foresee the restrictions returning to a full lockdown unless the virus gets out of control.
I still pity the crew that has to wear masks all day long. Maybe that will change also.