I'm not sure which buffet you went to but the Enchanted is still using the ticket system right now. You can have the waiter get it for you or wait for it to be cooked. Unless you're there at peak times, they're pretty fast at making them.
The only reason I can see is that they can Taylor their adds specifically for me.
Maybe they can possibly sell that info to other cruise lines.
Who really cares anyway??
It could very well be because the dressed down standards is still relatively new to Princess and other than word of mouth or reading it on a few bulletin boards is the only way to get to the truth.
Enjoy the civilized cruise lines.
Princess is slowly transitioning to newer types of production shows but it'll take awhile to break out of that old time rut that many have become comfortable with.
After reading all the problems with initial sailings in the past, I don't know why anyone would want to bother going on one. Just put it off for a few cruises & even thing will go much smoother once they work out all the bugs and the crew begins to work together more efficiently.