We have sailed on five different lines- but keep coming back to Disney, with and without the kids. Panama was our tenth Disney Cruise. People sometimes look at me and ask "why?" It's just better. The boats are kept immaculately (I've been on all except the Dream), the food is great and the staff is friendly and helpful. You don't have the casino and some of the shopping options available on other lines, but you have a great experience. Every time I cruise with them, I feel like our cruise is their only one. On this Panama cruise, we went through a hurricane, a tropical depression and a tropical storm. The captain avoided what he could, but some of out shore stops had to be canceled. The staff turned it into a positive. They worked to bring extra entertainment on board and to add activities. Jimmy and his staff are the best.
I like the navigator's verandah- a good way to save a little money. You don't have the larger chairs, but you have a less windy balcony.