Thank you for your thoughts. I was afraid to take a Disney Cruise alone, much as I like Disney and cruises. I was asking if anyone had taken this cruise alone, no one answered that they did..... so I guess that in itself is an answer.
I was looking a little more carefully, seems like much of the ship is dedicated to teen and child activities so there might be little for a solo to do, and few places on the ship that I might feel comfortable.
I have been cruising since the late 1960's, most recently on Carnival. I don't gamble, I don't drink much... I was looking for an alternative, but honestly, Carnival and Princess have so much to do and so many alternatives that I would be happy going back on one of them.
It was just a passing thought.