No photographers trying to sell you pictures, slowing down embarkation.
They do set up a free photobooth/mirror at various times around the ship. The pics are emailed to you.
No dress code, meaning nobody can complain that someone's wearing shorts in the dining room like they do on other lines.
No announcements interrupting your day.
Incredible menus that make you want to try things you've never had before.
Genuinely friendly crew.
Excellent musicians, and performers everywhere you look.
For the most part, no lines.
Attention to details. It's all in the details.