I agree with most of the Azamara comments. Crew to passenger ratio means you cannot turn round with a plate or a glass without someone putting it on a tray and taking it to your table.
Ordinary food choices, in my opinion, not that much better than Marella but they do have a separate vegan menu so I loved it for that.
The two biggest differences - you return to the ship from a port to receive a very unBritish and effusive 'welcome home'. You get used to it!
The second, and I know this is not important for many, the cabins are well designed but tiny, especially the bathrooms. You have to spend crazy money to get anything like a Marella balcony/junior suite. Forget anything as big as an Executive Suite.