I was on the Jade for 12 days on the Trans Atlantic sailing in November. The crew was great, and enjoyed the ship. It wasn't too large and not a huge number of passengers either. Some of the specialty restaurants seemed smaller then the larger ships. There is a deck that goes all around the ship, so it was a nice place to walk all around the ship. Many people were walking there each day.
I would suggest if you eat from the buffet, go outside to the back and eat outdoors, Nice area and not as crowded. They didn't offer many different options during non typical meal hours. For example, they had really good variety of cookies for a set amount of hours (I think starting at 3pm) in the outdoor cafe area. I wish they had more times for snacks.
Easy flow to get around the ship, there are 3 sets of elevators and 3 sets of stairs. You'll enjoy the ship and the crew. Ralph was our cruise director and he was great and friendly. He had been our cruise director on a different sailing we did last year.